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oa Current Allergy & Clinical Immunology - Allergy in Botswana : original research article

Volume 26, Issue 4
  • ISSN : 1609-3607

 

Abstract

Unlike South Africa and Zimbabwe, allergen sensitisation patterns are unknown for Botswana. Skinprick test (SPT) results for Gaborone are reviewed.


SPTs from an allergy practice included trees, grasses, weeds, moulds, cat, dog, dust mites and cockroach. Food SPTs were conducted when clinically indicated.
In 126 patients, median age was 7.8 years (interquartile range (IQR) 3.4-16.3 years), with male predominance (56%); 68% were atopic - 72% were sensitised to aeroallergens, 15% foods and 13% both. Top aeroallergen sensitisations were: Bermuda grass (41%), Timothy grass (33%), maize pollen (32%), (28%), English plantain (25%) and acacia tree (21%). Less common were: dust mite (14%), pets (14%), and cockroach (10%). Peanut and egg allergy were common food allergies (10%). Novel food allergies included mopane worm and mogwagwa. Frequent clinical presentations were rhinitis (70%), asthma (42%) and eczema (30%). Rhinitis patients were significantly grass allergic (Bermuda <0.01, Timothy =0.04, maize pollen <0.01). Asthmatics were more likely to be cockroach (=0.02) or (<0.01) allergic. Conjunctivitis was significantly linked to Bermuda grass (<0.001), maize (<0.01) and acacia tree pollen (=0.02) allergy.
Bermuda grass allergy is common in Botswana, but dust mite sensitisation is infrequent. Peanut and egg were the most common food allergies. Novel food allergens were identified.

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/content/caci/26/4/EJC148496
2013-11-01
2019-08-25

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