- Open Access
Food allergies in developing and emerging economies: need for comprehensive data on prevalence rates
© Boye; licensee BioMed Central Ltd. 2012
- Received: 17 July 2012
- Accepted: 11 December 2012
- Published: 20 December 2012
Although much is known today about the prevalence of food allergy in the developed world, there are serious knowledge gaps about the prevalence rates of food allergy in developing countries. Food allergy affects up to 6% of children and 4% of adults. Symptoms include urticaria, gastrointestinal distress, failure to thrive, anaphylaxis and even death. There are over 170 foods known to provoke allergic reactions. Of these, the most common foods responsible for inducing 90% of reported allergic reactions are peanuts, milk, eggs, wheat, nuts (e.g., hazelnuts, walnuts, almonds, cashews, pecans, etc.), soybeans, fish, crustaceans and shellfish. Current assumptions are that prevalence rates are lower in developing countries and emerging economies such as China, Brazil and India which raises questions about potential health impacts should the assumptions not be supported by evidence. As the health and social burden of food allergy can be significant, national and international efforts focusing on food security, food safety, food quality and dietary diversity need to pay special attention to the role of food allergy in order to avoid marginalization of sub-populations in the community. More importantly, as the major food sources used in international food aid programs are frequently priority allergens (e.g., peanut, milk, eggs, soybean, fish, wheat), and due to the similarities between food allergy and some malnutrition symptoms, it will be increasingly important to understand and assess the interplay between food allergy and nutrition in order to protect and identify appropriate sources of foods for sensitized sub-populations especially in economically disadvantaged countries and communities.
- Food allergy
- Food hypersensitivity
- Developing countries
Food allergy is the consequence of maladaptive immune responses to common and otherwise innocuous food antigens. The most common allergenic foods are cow’s milk and dairy products, hen’s egg, peanuts, nuts, gluten containing cereals (e.g., wheat, rye, barley), sesame, soybeans, mustard, fish, crustaceans and shellfish[2–6]. These specific food substances are frequently referred to as “priority food allergens” as they account for over 90% of all food allergic reactions. Other less common allergenic foods include legumes, and some fruits and fruit juices (e.g., kiwifruit, apple, grape) and vegetables (e.g., celeriac, carrots, onions).
Rising prevalence of food allergy and intolerance in the developed world has attracted much attention in the last two decades. Consequently, there is a growing body of knowledge about the prevalence, health and social impacts of food allergy in many developed countries. Work done by the Food Allergy Research and Resource Program (FARRP) and other institutions in the United States of America (USA) have allowed allergy prevalence rates in the country to be estimated at 3.5-4.0%[7, 8]. A nationwide study in the USA specifically focusing on peanut and tree nut allergy reported 1% overall prevalence rate of allergy to these foods. Various international initiatives such as the InformAll database and EuroPrevall, a European Union funded project which focused on the prevalence, cost and basis of food allergy in Europe have provided very useful data on prevalence rates across Europe[10, 11]. Estimates of prevalence based on food challenge studies ranged from 0% to 3% for milk, 0% to 1.7% for egg and 1% to 10.8% for any food. In Canada, Ben-Shoshan et al. reported probable prevalence rates of 0.9%, 1.1%, 0.5%, 1.4% and 0.1% to peanut, tree nut, fish, shellfish (specific type not specified) and sesame. Similar studies have been conducted in Australia and Japan. Together, such studies have helped to raise awareness of food allergies which has resulted in national and international legislation and recommendation for the identification of priority allergens when present in foods.
Unfortunately, in many countries in the developing world and in some emerging economies (e.g., China, India and Brazil) there continues to be a paucity of information regarding the prevalence and incidence of food allergy and other food hypersensitivities. Current assumptions are that prevalence rates are lower but this raises questions about potential health impacts should the assumptions not be supported by evidence. As the health and social burden of food allergy can be significant, national and international efforts focusing on food security, food quality and dietary diversity need to pay special attention to the role of food allergy in order to avoid marginalization of sub-populations in the community. This is also of importance for non-governmental organizations and international organizations involved in food aid programs as the major sources of foods used in emergency and food aid programs are considered as priority allergens (e.g., peanut, soybean, wheat, milk, eggs).
Number of reports found on food allergy for different geographic regions
Number of papers found
Specific countries in geographic region
China, Hong Kong, India, Indonesia, Malaysia, Philippines, Singapore, South Korea, Taiwan, Thailand
Iran, Israel, Saudi Arabia
Botswana, Egypt, Ghana, Morocco, Mozambique, Nigeria, South Africa, Togo, Zimbabwe
Argentina, Brazil, Chile, Mexico
Major allergenic foods in various geographic regions
Most common allergens reported
Shellfish, egg, peanut, beef, cow’s milk, tree nuts
Egg, cow’s milk, peanut, soy, wheat,
Milk, egg, fish, wheat, soy, peanut
Shellfish, peanut, soy, rice, egg, milk
Milk, shellfish, egg, fish, wheat, soy
Egg, milk, peanut, soy, shellfish, wheat
Peanut, shellfish, fish, egg, milk, rice
Milk, soy, egg, fish, rice
Shellfish, milk, egg, wheat, peanut, soy
Egg, shellfish, peanut, fish, cow’s milk, sesame
Egg, milk, fish, pork, seafood (6–12 yr)
Seafood, milk, peach, egg, fish (12–15 yr)
Peanut, egg, cow’s milk, wheat, banana, fish
Egg, milk, sesame
Seafood, meat, fruits/vegetables
Apple, tomato, soy, crab, peanut
Egg, peanut, wheat
Wheat, peanut, fish, soy, egg, milk
Peanut, fish, egg, cow’s milk, sesame, banana
Dairy, egg, fish, shrimp, beans, soy
Fish, milk, seafood, soy, orange
Wheat, dairy, shellfish, pork, egg
Fish, egg, milk, wheat, peanut, soy, corn
Prevalence of food allergies in Asia
Recent studies describing the pattern of anaphylaxis and the role of food triggers show that food is an important cause of severe allergic reactions in Asia. A study by Leung et al. of 3677 Chinese pre-school children aged 2–7 yr living in Hong Kong showed prevalence rates of parent-reported adverse food reaction (AFR) and parent-reported, doctor-diagnosed AFR to be 8.1% and 4.6%, respectively. The six leading causes of AFR were shellfish (15.8%), egg (9.1%), peanut (8.1%), beef (6.4%), cow’s milk (5.7%), and tree nuts (5.0%). Although the reasons are not clear, children born in mainland China had less parent-reported AFR (4.0%) than children born and raised in Hong Kong (6.7%). AFR was concluded to be a common atopic disorder in Hong Kong pre-school children, with prevalence rates comparable to that found in Caucasians.
Hill et al. found similar allergy prevalence rates in young children in Australia and several countries in Asia (Hong Kong, China, Taiwan, Indonesia, Philippines, Malaysia, Singapore, Japan, Thailand). The major difference was that culprit allergenic foods for Asia were different. Prevalence rates of food hypersensitivity in Australian infants and children were 3.2% for egg, 2% for cow’s milk, 1.9% for peanut, 1.2% for tree nuts and sesame, 0.2% for wheat, 0.1% for soy and 0.1% for fish. In Asia, hypersensitivity to shellfish and fish was more common than for nuts, peanut and wheat. This was particularly so when fish was part of the staple infant diet. With the exception of a few reported cases, rice hypersensitivity was rare in both Australia and the Asian countries considered.
Prevalence of peanut, tree nut, and shellfish allergy in schoolchildren in Singapore and the Philippines was studied by Shek et al.. Peanut and tree nut allergy was comparatively lower in Asian children compared to expatriate children (i.e., children living and attending expatriate/international schools in Singapore but who were born outside Asia), and a higher dominance of shellfish allergy was noted. Shellfish allergy prevalence in local Singapore was 1.2% for children aged 4 to 6 years and 5.2% for 14 to 16 year olds. In the Philippines, the prevalence rate was 5.1% for 14–16 year olds (no data available for 4 to 6 year olds). Convincing peanut and tree nut allergy were similar in local school children living in Singapore (4–6 years, 0.6%, 0.3%; 14–16 years, 0.5%, 0.3%, respectively) and the Philippines (14–16 years, 0.4%, 0.3%, respectively). Prevalence rates for expatriate children for both peanut and tree nuts ranged between 1.1 -1.3% and 0.6 – 1% for shellfish allergy.
Chiang et al. characterized food protein sensitization patterns in 227 children in Singapore who presented to an allergy clinic over 3 years with symptomatic allergic disease and at least one specific food allergen sensitization documented on skin prick testing. Egg, shellfish, peanut, fish, cow’s milk, sesame, wheat and soy were the major culprits. Ninety (40%) of the positive skin tests were positive to egg, 87 (39%) to shellfish, 62 (27.3%) to peanut, 30 (13.2%) to fish, 27 (11.8%) to cow’s milk, 21 (9.3%) to sesame, 13 (3.7%) to wheat and 8 (3.2%) to soy. Children having multiple food hypersensitivities and a family history of atopic dermatitis were found to be more likely to present with peanut allergy. Interestingly, shellfish sensitization was determined to be higher in children with allergic rhinitis who were sensitized to cockroaches (tropomyosin is a major allergen found in many shellfish and also insects like cockroaches). In a follow up study with 31 children with a positive skin prick test to peanut, 87.1% had IgE specific to both Ara h 1 and Ara h 2 and 54.8% to Ara h 3. Major allergens that induce IgE-responses in peanut-sensitive patients are Ara h 1, Ara h 2 and Ara h 3, 4. The authors, thus, demonstrated that Asian children with peanut sensitization have clinically similar presentations and respond to the same major allergenic proteins as their Western counterparts.
In addition to the allergens mentioned above, Goh et al. reported the Chinese delicacy bird’s nest soup to be the most common food allergen source in Singapore. The soup is made from the nest of swiftlets (tropical birds mostly found in South-east Asia). Unlike other birds, swiftlets secrete a gummy saliva which they use in building their nest. The saliva hardens when secreted to form the nest and there is hardly any plant material (i.e., twigs, leaves) found in the nest. Bird’s nest soup is a delicacy believed to increase longevity. This belief informs dietary habits in certain regions in Asia resulting in exposure of infants and children to bird’s nest at a very early age. Bird’s nest soup provides a good example of how dietary habits contribute to food allergy.
A retrospective study by Yang et al. of 138 patients with anaphylaxis, including inpatients, outpatients, and emergency department visitors, in the Seoul National University Hospital in Korea covering the period January 1, 2000, through July 31, 2006 found food and food-dependent exercise-induced to be responsible for 21.3% and 13.2% anaphylaxis events, respectively. Buckwheat was the leading cause of food anaphylaxis. Earlier studies by Oh et al. of prevalence of food allergy in Korean school children 6–15 year olds found rates ranging from 4.7 to 5.1% (children with diagnoses) and 5.7 to 8.6% (children with symptoms in the last 12 months of the study). Depending on the age group, the most common food allergens were egg, cow’s milk, fish, seafood (specific type not indicated), pork and peach.
In addition to the priority allergens, sensitization to some pulse legumes has been reported in Asia. Kumari et al. investigated blackgram sensitization in asthma and rhinitis patients in India. Of 816 patients, 16 patients (~2%) were skin prick test (SPT) positive and 14 (1.7%) showed elevated specific IgE to blackgram. Four of the 14 patients reacted in oral challenge studies. Although not confirmed clinically, a high cross-reactivity has been reported for different legumes (e.g., soybeans, peanuts, pulses)[23, 24]. Blackgram, for example, shares allergenicity with lentil and limabean. The clinical relevance of such cross-reactivities needs to be carefully considered. Hegde et al. also reported an allergic reaction to pomegranate in India.
Prevalence of food allergies in the Middle East
Very few studies have been conducted on food allergy prevalence rates in the Middle East. Food was the fourth trigger of allergic reaction in a study conducted in Mashhad in Northeast Iran. Prevalence of all allergic disorders in the city was 27.5% (data includes all allergic disorders and is not restricted to food allergies). In another study, 35.9 % of asthmatic children in Semnan (Iran) showed sensitization to at least one of the principal allergenic foods (wheat, rice, peanut, egg, soya and cow’s milk).
GadElRab in a study of 217 patients suffering from asthma, rhinitis and urticaria in Riyadh, Saudi Arabia found 17.5% to have specific IgE antibodies to various foods. The most common sensitivities were to peanut (23%), egg (15%) and cow’s milk (13%). Further studies with 100 adult asthmatic patients found up to 58% reacting to at least one of 24 allergens tested with the most common allergens being peanut (11%), egg white (3%), milk (3%), wheat (3%), banana (3%) and fish (2%). Aba-Alkhail and El-Gamal similarly reported a 29% prevalence rate of clinical sensitivity to food in a study of 1341 asthmatic patients in Jeddah, Saudi Arabia. Another study of patients attending an outpatient allergy clinic in Riyadh, Saudi Arabia, found 13% to be sensitized to date fruits.
In Israel, prevalence of clinically revelant IgE-mediated food allergic reaction in 9070 infants and young children was 1.2%, with egg, cow’s milk and sesame being the most common food allergens identified. Another study linked increased dispensing rate of adrenaline auto-injectors (an increase by 76% between 1997 and 2004) to potential increased rates of anaphylactic reactions, increased awareness of the risk of anaphylaxis or both. The authors further observed that the lack of reported cases of anaphylactic death may, amongst others, be partly explained by under-diagnosis and under-reporting and recommended further studies to determine prevalence rates of anaphylactic reactions.
Prevalence of food allergies in Africa
Data on food allergy prevalence rates in Africa is limited. Approximately 10% of 14,000 patients of all ages referred to the only specialist allergy clinic in Harare, Zimbabwe, in the 5-year period from September 1997 to September 2002, were reportedly diagnosed with food allergies. Westritschnig et al. conducted a study of 50 allergic patients in Zimbabwe for the presence of IgE antibodies to 20 food allergen extracts. Apple (24%), tomato (24%), soy (22%), crab (22%) and peanut (20%) were the most frequently detected food allergens.
Using skin prick tests, Levin et al. reported 5% prevalence rate of food allergy in a cross-sectional study of 211 urban high school black children of Xhosa ethnicity in South Africa. Foods causing most allergies were egg white (3.3%), peanut (1.9%) and milk (1.9%). Wheat, soy and fish have been reported as common allergens in other studies. In one study, mothers in South Africa consuming more peanut during pregnancy were found to have higher probability of having a child with peanut allergy. Significant associations between peanut sensitization and soy and codfish sensitivity were reported. In regards to seafood, an earlier study found prawns (46.7%), crayfish (43.8%), abalone (35.2%), black mussels (33.3%), oyster (23.8%), snails (16.2%), shrimp (13.3%), crab (12.4%) and squid (11.4%) to be some of the most common species causing adverse food reactions in South Africa. Bony fish species most commonly causing reactions were hake (24.8%), yellowtail (21.9%), salmon (15.2%), mackerel (15.2%), kingklip (13.3%) and snoek (10.5%). In another similar study of the sera of 80 seafood allergic South African patients, the highest sensitization was found to crustaceans (50%) followed by molluscs (30%) and a variety of fish species (20%).
In Ghana, a study of food allergy in 1,407 school children found 11% of children reporting adverse reactions to foods, and 5% of 1,431 children showed a positive SPT reaction mostly directed against peanut and pineapple. In another study, life prevalence of self-reported food allergy in Maputo, Mozambique was 19.1% with seafood (specific seafood not identified) (54.8%), meat (13.0%) and fruits and vegetables (13%) being the most frequently reported allergenic foods. Other exotic foods such as the mopane worm, a high protein delicacy, consumed in some regions in Africa have been reported to cause allergic reaction in some individuals.
More recently, Hossny et al. conducted a study of 100 children in Cairo (Egypt) diagnosed to have allergic diseases and found positive skin prick tests with peanut extract in seven children (7%). Specific IgE results of these children ranged from 17–24 kUA/L. The 7 children sensitized to peanut had positive family history of allergic diseases. Six of the 7 children consented to oral challenge studies and 3 were confirmed to have peanut allergy. Of the other children, 10 had confirmed allergy to other foods including egg allergy in 2, fish in 3, cow’s milk in 2, sesame in 1, banana in 1, and prunes in 1. Nine of these ten children were not sensitized to peanut, however, one of them was sensitized to both peanut and bananas. In their conclusion, the authors stated that peanut allergy in Egypt is underestimated and that the sensitization rates may be even higher than previously thought.
In Morocco, 9.5% of 442 patients participating in a cross-sectional study in the Fes-Meknes region reported food allergies primarily to eggs (4.2%), peanuts (2.5%) and wheat flour (0.4%). Another study found 45% of 160 atopic Moroccan children to have sensitization to food. A study from Mauritius reported seafood to be the most common allergen. In Lome (Togo), 10 out of 220 out-patients at a dermatology clinic suffering from pruritus reportedly had food allergies. In Rivers State, Nigeria, 28% of respondents self-reported having allergy to a variety of foods including seafood (14.7%), cereals/legumes (11.4%), vegetable oil (1.1%) and pork (1.6%).
Mbugi and Chilongola in a review on allergic disorders in Africa reported allergy prevalence rates in Africa of 20-30% (i.e., includes all allergic disorders) and suggested that allergy is as important an issue as other highly morbid conditions such as human immunodeficiency virus/acquired immune deficiency syndrome (HIV/AIDS), malaria and tuberculosis. They recommended that problems of allergy and allergens in Africa as compared with other disease burdens may suggest the need for a more balanced approach based on priority. As with other developing and emerging countries, further work is required with larger sample sizes to determine prevalence rates in Africa.
Prevalence of food allergy in South America
Prevalence data of food hypersensitivity in South America is scarce. Frequency of food allergy reported at medical consultations in Monterrey, Mexico was 2.7% with 51% of patients being under 5 yr. The most frequent allergenic foods were dairy products, egg, fish, shrimp, beans, soy, chili, mango, cacao, and strawberry. Major symptoms were cutaneous in 58% of patients, followed by gastrointestinal and respiratory. In a broader study on the prevalence of allergic diseases in Mexico City, allergic rhinitis was most frequently reported (42.6%). Most important risk factors for allergic diseases were family history of atopy in first and second degree relatives, early consumption of cow’s milk, early weaning with cereal, egg, beef, fish and pulses.
A prospective, longitudinal study of 279 outpatients with symptoms suggestive of respiratory allergy visiting an allergy clinic in Mexico reported prevalence of oral allergy to peach, apple, kiwi, pear and banana in 50 to 53.8% of patients. In another study of 356 allergic patients who had been admitted to tertiary care the most common food allergens found were to Amaranthus palmeri (43.8%), chicken (9.3%) and apple/pineapple (1.2%). Other Mexican studies have reported sensitivities to fish, milk, seafood/shellfish, egg, wheat, soy, beans, orange, onion, tomato, chicken, pork, nut, peanut, rice, lettuce and strawberry[55–59].
In a study of 408 children and adolescents between the ages of 8 months and 15 years reporting with allergies to a Chilean healthcare institution, Martinez et al. found nearly 58% to have positive skin prick test response to dust mites primarily, but also to cow’s milk, egg, beef, seafood, peanut, soy and orange. A similar Brazilian study of patients with clinical history of food allergy found the most common food allergens to be fish, egg white, cow’s milk, wheat, peanut, soy and corn.
In Argentina, a phone survey found approximately one million Argentines over the age of 18 (i.e., 5%) have food allergies[62, 63]. Peer-reviewed data of prevalence rates is however very limited. Acknowledgement of the paucity of data on food allergies has resulted in the formation of the Platform of Food Allergens a discussion forum of various professionals to address the issue.
Recently Santos et al. highlighted reports of allergic reactions to manioc or cassava (Manihot esculenta Crantz) in Brazil, Mozambique and Spain. Manioc is a tuber used as a source of food and starch in many countries, in particular South America, Africa and Asia. Its allergenicity is linked to the latex-fruit syndrome which is the association of latex allergy and allergy to other plant-derived foods.
Other adverse food reactions
Glucose-6-phosphate dehydrogenase deficiency (G6PD deficiency) which affects more than 400 million people worldwide with the highest prevalence in Asia, Africa and the Mediterranean region is a disease characterized by acute hemolysis (favism) induced by oxidative stress. Although it is different from food allergy, some symptoms such as weakness and abdominal pain may be similar to food sensitivity reactions. Fava bean which is grown and consumed in many parts of the world including Asia is the most common food trigger for acute hemolysis in G6PD deficiency patients.
Eosinophilic esophagitis (EE), characterized by extensive infiltration of eosinophils in the epithelium of esophagus, has recently been associated with food allergies. While the exact causes are unknown, EE is believed to be an allergic inflammatory disease with improvements observed with food elimination diets. Symptoms of EE include weight loss, vomiting, nausea and food impaction. Of 68 cases studied in a cross-sectional study on adults with refractory reflux disease in Tehran Iran, prevalence of eosinophilic esophagitis (EE) was 8.8%. Subjects enrolled in the study had upper gastrointestinal tract symptoms such as heartburn, regurgitation, noncardiac chest pain and food impaction and were non-responsive to treatment (omeprazole 20 mg/day) for at least eight weeks. Further studies on the causes of EE, exact mechanisms and prevalence rates are required in developed and emerging economies as well as in developing countries.
Prevalence rates of celiac disease in different populations
General pediatric population
1:85 – 1:262
School children in Punjab, North India
Children and adults in Delhi, India
Children (i.e., control asymptomatic population)
Adult blood donors
Newborns over 5 yrs
School children in Ariana, Tunisia
Adult blood donors
Adult blood donors
In discussions about food allergy in the global context, therefore, the broader definition of food allergy which encompasses IgE as well as non-IgE mediated food sensitivities should be considered. This is important as the health and social implications for all food related immune-mediated responses are likely to be similar and particularly because approaches to identify and control these foods along the food chain and to manage disease burdens may be identical.
Although food allergy is recognized as a growing problem in the western world, there continues to be limited data on prevalence and incidence rates in many developing countries and emerging economies. Similarities between symptoms of food allergies and those of malnutrition and other childhood diseases is of particular concern as this can prevent effective diagnosis. Additionally, as the major food sources used in international food aid programs are frequently priority allergens (e.g., peanut, milk, eggs, soybean, fish, wheat), it will be increasingly important to understand and assess the interplay between food allergy and nutrition in order to protect and identify appropriate sources of foods for sensitized sub-populations especially in disadvantaged countries and communities. Identification of infants at risk will be a critical first step in this endeavor. Indeed, studies have shown that restricted diets (as is highly likely to occur with food allergy) cause malnutrition even in the developed world. Management of food allergy at the global level (i.e., in both developed, developing and emerging countries) is therefore important, and requires particular consideration in the developing world where the burden of malnutrition already represents a significant challenge. As previously stated by Shek and Lee large, well-designed epidemiological studies are needed so that the scale of the problem can be understood, public awareness can be increased and important food allergens can be identified. With looming food and agricultural issues such as growing hunger, malnutrition and rising food prices, food allergy, may remain a low priority if a consistent effort is not maintained to improve our understanding of its health, social and economic impact at the global level.
Ms Zhen Ma and Mr Pierre Di Campo are gratefully acknowledged for their assistance in the preparation of this manuscript.
- Vassallo MF, Camargo CA: Potential mechanisms for the hypothesized link between sunshine, vitamin D, and food allergy in children. J Allergy Clin Immunol. 2010, 126: 217-222. 10.1016/j.jaci.2010.06.011.View ArticlePubMedGoogle Scholar
- FAO/WHO: Codex alimentarius commission: report of the twenty-sixth session of the codex committee on food labeling. 1998, Ottawa, Canada: ALINORM 99/22Google Scholar
- Zarkadas M, Scott FW, Salminen J, HamPong A: Common allergenic foods and their labeling in Canada. A review Can J Clin Immunol. 1999, 4: 118-141.Google Scholar
- Van Der Poel L, Chen J, Penagos M: Food allergy epidemic - is it only a western phenomenon?. Curr Opin Allergy Clin Immunol. 2009, 22: 121-126.Google Scholar
- Sicherer SH, Leung DYM: Advances in allergic skin disease, anaphylaxis, and hypersensitivity reactions to foods, drugs, and insects in 2010. J Allergy Clin Immunol. 2011, 127: 326-335. 10.1016/j.jaci.2010.11.024.View ArticlePubMedGoogle Scholar
- Śpičák V: Changing face of allergy and allergic diseases. Alergie. 2010, 12: 83-86.Google Scholar
- http://farrp.unl.edu/resources/gi-fas/prevalence-of-food-allergies. Retrieved at Oct. 19, 2012
- Sampson HA: Update on food allergy. J Allergy Clin Immunol. 2004, 113: 805-819. 10.1016/j.jaci.2004.03.014.View ArticlePubMedGoogle Scholar
- Sicherer SH, Munoz-Furlong A, Sampson HA: Prevalence of peanut and tree nut allergy in the united states determined by means of a random digit dial telephone survey: a 5-year follow-up study. J Allergy Clin Immunol. 2003, 112: 1203-1207. 10.1016/S0091-6749(03)02026-8.View ArticlePubMedGoogle Scholar
- Zuidmeer L, Goldhahn K, Rona RJ, Gislason D, Madsen C, Summers C: The prevalence of plant food allergies: a systematic review. J Allergy Clin Immunol. 2008, 121 (5): 1210-1218. 10.1016/j.jaci.2008.02.019.View ArticlePubMedGoogle Scholar
- Rona RJ, Keil T, Summers C, Gislason D, Zuidmeer L, Sodergren E: The prevalence of food allergies: a meta-analysis. J Allergy Clin Immunol. 2007, 120 (3): 638-646. 10.1016/j.jaci.2007.05.026.View ArticlePubMedGoogle Scholar
- Ben-Shoshan M, Harrington DW, Soller L, Fragapane J, Joseph L, St Pierre Y: A population-based study on peanut, tree nut, fish, shellfish, and sesame allergy prevalence in Canada. J Allergy Clin Immunol. 2010, 125: 1327-1335. 10.1016/j.jaci.2010.03.015.View ArticlePubMedGoogle Scholar
- Hill DJ, Hosking CS, Zhie CY, Leung R, Baratwidjaja K, Iikura Y: The frequency of food allergy in Australia and Asia. Environ Toxicol Pharmacol. 1997, 4: 101-110. 10.1016/S1382-6689(97)10049-7.View ArticlePubMedGoogle Scholar
- Shek LP, Lee BW: Food allergy in Asia. Curr Opin Allergy Clin Immunol. 2006, 6: 197-201. 10.1097/01.all.0000225160.52650.17.View ArticlePubMedGoogle Scholar
- Leung TF, Yung E, Wong YS, Lam CWK, Wong GWK: Parent-reported adverse food reactions in Hong Kong Chinese pre-schoolers: epidemiology, clinical spectrum and risk factors. Pediatr Allergy Immunol. 2009, 20: 339-346. 10.1111/j.1399-3038.2008.00801.x.View ArticlePubMedGoogle Scholar
- Shek LP, Cabrera-Morales EA, Soh SE, Gerez I, Ng PZ, Yi FC: A population-based questionnaire survey on the prevalence of peanut, tree nut, and shellfish allergy in 2 Asian populations. J Allergy Clin Immunol. 2010, 126: 324-331. 10.1016/j.jaci.2010.06.003. e327View ArticlePubMedGoogle Scholar
- Chiang WC, Kidon MI, Liew WK, Goh A, Tang JPL, Chay OM: The changing face of food hypersensitivity in an Asian community. Clin Exp Allergy. 2007, 37: 1055-1061. 10.1111/j.1365-2222.2007.02752.x.View ArticlePubMedGoogle Scholar
- Krause S, Latendorf T, Schmidt H, Darcan-Nicolaisen Y, Reese G, Petersen A: Peanut varieties with reduced ara h 1 content indicating no reduced allergenicity. Mol Nutr Food Res. 2010, 54: 381-387. 10.1002/mnfr.200900072.View ArticlePubMedGoogle Scholar
- Goh DL, Lau YN, Chew FT, Shek LP, Lee BW: Pattern of food-induced anaphylaxis in children of an Asian community. Allergy. 1999, 54: 84-86. 10.1034/j.1398-9995.1999.00925.x.View ArticlePubMedGoogle Scholar
- Yang MS, Lee SH, Kim TW, Kwon JW, Lee SM, Kim SH: Epidemiologic and clinical features of anaphylaxis in Korea. Ann Allergy Asthma Immunol. 2008, 100: 31-36. 10.1016/S1081-1206(10)60401-2.View ArticlePubMedGoogle Scholar
- Oh JW, Pyun BK, Choung JT, Ahn KM, Kim CH, Song SW: Epidemiological change of atopic dermatitis and food allergy in school-aged children in Korea between 1995 and 2000. J Korean Med Sc. 2004, 19: 716-723. 10.3346/jkms.2004.19.5.716.View ArticleGoogle Scholar
- Kumari D, Kumar R, Sridhara S, Arora N, Gaur SN, Singh BP: Sensitization to blackgram in patients with bronchial asthma and rhinitis: clinical evaluation and characterization of allergens. Allergy: Eur Allergy Clin Immunol. 2006, 61: 104-110. 10.1111/j.1398-9995.2006.00990.x.View ArticleGoogle Scholar
- Boye JI, L’Hocine L, Rajamohamed SH: Processing foods without soybean ingredients. Allergen management in the food industry. Edited by: Boye JI, Godefroy S. 2010, New Jersey: John Wiley & Sons, Inc, 355-391.View ArticleGoogle Scholar
- Boye JI, Danquah AO, Thang CL, Zhao X: Food allergens. Food biochemistry and food processing. Edited by: Simpson BK, Nollet LML, Toldra F, Benjakul S, Paliyath G, Hui YH. 2012, Iowa: Wiley-Blackwell, 798-819.View ArticleGoogle Scholar
- Hegde VL, Mahesh PA, Venkatesh YP: Anaphylaxis caused by mannitol in pomegranate. Allergy Clin Immunol Int: J World Allergy Org. 2002, 14 (1): 37-39. 10.1027/0838-19188.8.131.52.View ArticleGoogle Scholar
- Varasteh AR, Fereidouni M, Shakeri MT, Vahedi F, Abolhasani A, Afsharian MS: Prevalence of allergic disorders among the population in the city of Mashhad, Northeast Iran. J Public Health. 2009, 17: 107-112. 10.1007/s10389-008-0217-6.View ArticleGoogle Scholar
- Nabavi M, Hoseinzadeh Y, Ghorbani R, Nabavi M: Prevalence of food allergy in asthmatic children under 18 years of age in semnan-iran in 2007–2008. Koomesh. 2010, 11: 162-169.Google Scholar
- GadElRab MO: The frequency of IgE antibodies specific to inhalant and food allergens in adult asthamatic patients in Riyadh, Saudi Arabia. Annals Saudi Med. 1999, 19 (5): 447-449.Google Scholar
- GadElRab MO: Foods and food allergy: the prevalence of IgE antibodies specific for food allergens in Saudi patients. Saudi J Gastroenterol. 1998, 4 (1): 25-29.Google Scholar
- Aba-Alkhail BA, El-Gamal FM: Prevalence of food allergy in asthmatic patients. Saudi Med J. 2000, 21 (1): 81-87.PubMedGoogle Scholar
- Kwaasi AAA, Harfi HA, Parhar RS, Al-Sedairy ST, Collison KS, Panzani RC: Allergy to date fruits: characterization of antigens and allergens of fruits of the date palm (phoenix dactylifera L.). Allergy: Eur Allergy Clin Immunol. 1999, 54: 1270-1277. 10.1034/j.1398-9995.1999.00116.x.View ArticleGoogle Scholar
- Dalal I, Binson I, Reifen R, Amitai Z, Shohat T, Rahmani S: Food allergy is a matter of geography after all: sesame as a major cause of severe IgE-mediated food allergic reactions among infants and young children in Israel. Allergy. 2002, 57: 362-365. 10.1034/j.1398-9995.2002.1s3412.x.View ArticlePubMedGoogle Scholar
- Levy Y, Segal N, Danon YL: Trends in adrenaline (EpiPen) dispensing in Israel in 1997–2004. Public Health. 2007, 121: 144-147. 10.1016/j.puhe.2006.08.017.View ArticlePubMedGoogle Scholar
- Sibanda EN: Inhalant allergies in Zimbabwe: a common problem. Int Arch Allergy Immunol. 2003, 130: 2-9. 10.1159/000068377.View ArticlePubMedGoogle Scholar
- Westritschnig K, Sibanda E, Thomas W, Auer H, Asp ̈ck H, Pittner G: Analysis of the sensitization profile towards allergens in central Africa. Clin Exp Allergy. 2003, 33: 22-27. 10.1046/j.1365-2222.2003.01540.x.View ArticlePubMedGoogle Scholar
- Levin ME, Muloiwa R, Motala C: Associations between asthma and bronchial hyper-responsiveness with allergy and atopy phenotypes in urban black south African teenagers. South African Med J. 2011, 101 (7): 472-476.Google Scholar
- Gray C, Kung ST: Food allergy in south Africa: joining the food allergy epidemic?. Curr Allergy Clin Immunol. 2012, 25 (1): 24-29.Google Scholar
- Frank L, Marian A, Visser M, Weinberg E, Potter PC: Exposure to peanuts in utero and in infancy and the development of sensitization to peanut allergens in young children. Ped Allergy Immunol. 1999, 10 (1): 27-32. 10.1034/j.1399-3038.1999.101010.x.View ArticleGoogle Scholar
- Zinn C, Lopata A, Visser M, Potter PC: The spectrum of allergy to south African bony fish (teleosti). Evaluation by double-blind, placebo-controlled challenge. S African Med J. 1997, 87 (2): 146-152.Google Scholar
- Lopata AL, Jeebhay MF: Seafood allergy in south Africa - studies in the domestic and occupational setting. Allergy Clin Immunol Int. 2001, 13 (5): 204-210. 10.1027/0838-19184.108.40.206.View ArticleGoogle Scholar
- Obeng BB, Amoah AS, Larbi IA, Yazdanbakhsh M, van Ree R, Boakye DA: Food allergy in Ghanaian schoolchildren: data on sensitization and reported food allergy. Int Arch Allergy Immunol. 2010, 155: 63-73.View ArticlePubMedGoogle Scholar
- Lunet N, Falc ̃o H, Sousa M, Bay N, Barros H: Self-reported food and drug allergy in Maputo, Mozambique. Public Health. 2005, 119: 587-589. 10.1016/j.puhe.2004.07.013.View ArticlePubMedGoogle Scholar
- Okezie OA, Kgomotso KK, Letswiti MM: Mopane worm allergy in a 36-year-old woman: a case report. J Medical Case Reports. 2010, 4: 42-10.1186/1752-1947-4-42.View ArticleGoogle Scholar
- Hossny E, Gad G, Shehab A, El-Haddad A: Peanut sensitization in a group of allergic Egyptian children. Allergy Asthma Clin Immunol. 2011, 7: 11-17. 10.1186/1710-1492-7-11.PubMed CentralView ArticlePubMedGoogle Scholar
- Ouahidi I, Aarab L, Dutau G: The effect of thermic and acid treatment on the allergenicity of peanut proteins among the population of the region of Fes-Meknes in morocco. Rev Francaise d'Allergol. 2010, 50 (1): 15-21.View ArticleGoogle Scholar
- Ghadi A, Dutau G, Rance F: A sensitization study of atopic children in Marrakech. A prospective study of 160 children between 2002 and 2005. Rev Francaise d'Allergol d'Immunol Clin. 2007, 47 (6): 409-415. 10.1016/j.allerg.2007.03.006.View ArticleGoogle Scholar
- Pugo-Gunsam P, Cahoolessur N, Subratty AH: A survey on reported symptoms of food hypersensitivity in Mauritius. (Food allergies and intolerances.). Nutr Food Sci. 2008, 38 (5): 446-450. 10.1108/00346650810906967.View ArticleGoogle Scholar
- Pitche P, Bahounde A, Agbo K, Tchangai-Walla K: The aetiology of pruritus presented at a dermatology clinic in lome (Togo). Cahiers d'Études et de Recherches Francophones/Sante. 1996, 6 (1): 17-19.Google Scholar
- Achinewu SC: Food allergy and its clinical symptoms in Nigeria. Food Nutr Bull. 1983, 5 (3): 18-19.Google Scholar
- Mbugi EV, Chilongola JO: Allergic disorders in Africa and Africans: is it primarily a priority?. World Allergy Org J. 2010, 3: 175-181. 10.1097/WOX.0b013e3181e1976c.View ArticleGoogle Scholar
- Rodríguez-Ortiz PG, Muñoz-Mendoza D, Arias-Cruz A, González-Díaz SN, Herrera-Castro D, Vidaurri-Ojeda AC: Epidemiological characteristics of patients with food allergy assisted at regional center of allergies and clinical immunology of Monterrey. Revista alergia Mexico. 2009, 56: 185-191.PubMedGoogle Scholar
- López Pérez G, Morfín Maciel BM, Huerta López J, López López J, Rivera Pérez JL, López Medina L: Risk factors related to allergic diseases in Mexico city. Rev Alerg Mex. 2010, 57: 18-25.PubMedGoogle Scholar
- Morfín-Maciel BM, Flores I, Rosas-Alvarado A, Bautista M, López-López JR: Sensitization to pollens of oleaceae family in a group of patients from Mexico City. Rev Alerg Mex. 2009, 56 (6): 198-203.PubMedGoogle Scholar
- Ortega EV, Castrejón Vázquez MI, Tapia JG, Miranda Feria AJ: Most common allergens in allergic patients admitted into a third level attention hospital. Rev Alerg Mex. 2004, 51 (4): 145-150.PubMedGoogle Scholar
- Ávila Castañón L, Pérez López J, Del Río Navarro BE, Rosas Vargas MA, Lerma Ortiz L, Sienra Monge JJL: Food hypersensitivity by skin test in allergic patients at hospital infantil de Mexico Federico Gomez. Rev Alerg Mex. 2002, 49 (3): 74-79.PubMedGoogle Scholar
- Medina Segura E, González Díaz SN, Arias Cruz A, Canseco González C: Clinical characteristics of atopic dermatitis in a group of patients attending to the regional center of allergy and clinical immunology of Monterrey, Mexico. Rev Alerg Mex. 2004, 51 (2): 45-48.PubMedGoogle Scholar
- Arroyave CM: Otitis media recurrente con efusión y alergia a los alimentos en pacientes pediátricos. Rev Alerg Mex. 2001, 48 (5): 141-144.PubMedGoogle Scholar
- Cisneros MO, Diaz MAV, Del Río Navarro BE, Monge JJLS: Reactividad cutánea a alimentos en pacientes con rinoconjuntivitis alérgica. Rev Alerg Mex. 1997, 44 (6): 153-157.Google Scholar
- Ramos Morín CJ, Canseco González C: Hypersensitivity to common allergens in the central region of Coahuila. Rev Alerg Mex. 1993, 40 (6): 150-154.PubMedGoogle Scholar
- Martinez J, Mendez C, Talesnik E, Campos E, Viviani P, Sanchez I: Skin prick test of immediate hypersensitivity in a selected Chilean pediatric population sample. Rev Med Chile. 2005, 133: 195-201.PubMedGoogle Scholar
- Naspitz CK, Solé D, Jacob CA, Sarinho E, Soares FJP, Dantas V: Sensitization to inhalant and food allergens in Brazilian atopic children by in vitro total and specific IgE assay. Allergy project. PROAL. J Pediatr (Rio J). 2004, 80 (3): 203-210.View ArticleGoogle Scholar
- http://www.abcc.org.ar/health-issues--our-hospital/food-allergies. Retrieved at Oct. 19, 2012
- Bozzola CM, Ivancevich JC, Ardusso L, Ghiani H, Marcipar A, Fantin S: Encuesta sobre percepción de salud, conocimiento de las defensas naturales y prevalencia de enfermedades alérgicas y patologías asociadas en Argentina. Módulo alergia a alimentos [Abstract]. Arch Alergia. 2007, 38: 134-Google Scholar
- Gonzalez C, Lopez MC: Platform of food allergens in Argentina. Clin Transl Allergy. 2011, 1 (Suppl 1): 16-View ArticleGoogle Scholar
- Santos KS, Galvao CE, Gadermaier G, Resende VMF, De Oliveira Martins C, Misumi DS: Allergic reactions to manioc (Manihot esculenta Crantz): Identification of novel allergens with potential involvement in latex-fruit syndrome. J Allergy Clin Immunol. 2011, 128: 1367-1369. 10.1016/j.jaci.2011.07.019.View ArticlePubMedGoogle Scholar
- Brandt O, Rieger A, Geusau A, Stingl G: Peas, beans, and the Pythagorean theorem - the relevance of glucose-6-phosphate dehydrogenase deficiency in dermatology. JDDG – J German Soc Dermatol. 2008, 6: 534-539.Google Scholar
- Foroutan M, Norouzi A, Molaei M, Mirbagheri SA, Irvani S, Sadeghi A: Eosinophilic esophagitis in patients with refractory gastroesophageal reflux disease. Dig Dis Sci. 2010, 55: 28-31. 10.1007/s10620-008-0706-z.View ArticlePubMedGoogle Scholar
- Coton T, Grassin F, Maslin J, Gidenne S, Sarret D, Petitjeans F: Celiac disease: special features in africa. Description of 8 cases in Djibouti (horn of Africa). Med Trop (Mars). 2008, 68 (2): 144-148.Google Scholar
- Barada K, Bitar A, Mokadem MAR, Hashash JG, Green P: Celiac disease in middle eastern and north African countries: a new burden?. World J Gastroenterol. 2010, 16 (2): 1449-1457. 10.3748/wjg.v16.i12.1449.PubMed CentralView ArticlePubMedGoogle Scholar
- Byass P, Kahn K, Ivarsson A: The global burden of childhood coeliac disease: a neglected component of diarrhoeal mortality?. PLoS One. 6 (7): e22774-10.1371/journal.pone.0022774.Google Scholar
- Sood A, Midha V, Sood N, Avasthi G, Sehgal A: Prevalence of celiac disease among school children in Punjab, north India. J Gastroenterol Hepatol. 2006, 21 (10): 1622-1625. 10.1111/j.1440-1746.2006.04281.x.View ArticlePubMedGoogle Scholar
- Makharia GK, Verma AK, Amarchand R, Bhatnagar S, Das P, Goswami A, Bhatia V, Ahuja V, Gupta SD, Anand K: Prevalence of celiac disease in the northern part of India: a community based study. J Gastroenterol Hepatol. 2011, 26: 894-900. 10.1111/j.1440-1746.2010.06606.x.View ArticlePubMedGoogle Scholar
- Cataldo F, Montalto G: Celiac disease in the developing countries: a new and challenging public health problem. World J Gastroenterol. 2007, 13 (15): 2153-2159.PubMed CentralView ArticlePubMedGoogle Scholar
- Cummins AG, Roberts-Thomson IC: Prevalence of celiac disease in the Asia-pacific region. J Gastroenterol Hepatol. 2009, 24 (8): 1347-1351. 10.1111/j.1440-1746.2009.05932.x.View ArticlePubMedGoogle Scholar
- Kirby M, Danner E: Nutritional deficiencies in children on restricted diets. Pediatr Clin North Am. 2009, 56: 1085-1103. 10.1016/j.pcl.2009.07.003.View ArticlePubMedGoogle Scholar
- Vieira MC, Morais MB, Spolidoro JVN, Toporovski MS, Cardosa AL, Araujo GTB: A survey on clinical presentation and nutritional status of infants with suspected cow' milk allergy. BMC Pediatr. 2010, 10: 25-32. 10.1186/1471-2431-10-25.PubMed CentralView ArticlePubMedGoogle Scholar
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