Sensitisation profile to airborne allergens of patients followed for asthma in Cotonou, Benin. A cross-sectional study using prick-tests

Sensitisation profile to airborne allergens of patients followed for asthma in Cotonou, Benin. A cross-sectional study using prick-tests

The sensitisation profile to airborne allergens of asthma patients followed in Benin is not known. A descriptive cross-sectional study was conducted from April to June 2013 at the hospital reference centre. A prick-test was performed in all adults with asthma consulting during this period. The stand...

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Bibliographic Details
Published in:Revue des maladies respiratoires Vol. 32; no. 9; p. 930
Main Authors: Agodokpessi, G, Ade, G, Dovoedo, N, Ade, S, Wachinou, A P, Fayomi, B, Gninafon, M
Format: Journal Article
Language:English
French
Published: France 01-11-2015
Subjects:
Adult
Air Pollutants - immunology
Allergens - immunology
Animals
Asthma - complications
Asthma - epidemiology
Asthma - immunology
Benin - epidemiology
Cats
Cross-Sectional Studies
Dermatophagoides farinae - immunology
Dermatophagoides pteronyssinus - immunology
Dogs
Female
Humans
Hypersensitivity - complications
Hypersensitivity - diagnosis
Hypersensitivity - epidemiology
Male
Middle Aged
Poaceae - immunology
Skin Tests
Young Adult
Benin
Allergy
Skin prick-test
Acariens
Allergie
Mites
Prick-test
Pneumallergène
Asthme
Airborne allergen
Asthma
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Description
Summary:The sensitisation profile to airborne allergens of asthma patients followed in Benin is not known. A descriptive cross-sectional study was conducted from April to June 2013 at the hospital reference centre. A prick-test was performed in all adults with asthma consulting during this period. The standardized allergenic extracts tested were: mites (Dermatophagoides pteronyssinus [DP], Dermatophagoides farinae [DF] and Blomia tropicalis [BT]), cockroaches, 5 different grasses, Alternaria, dogs and cats. The test was positive when the diameter of the wheal was more than half that of the positive control and/or when the diameter of the wheal was ≥3mm than the negative control. Of the 253 asthmatics tested, 247 (97.6%) had at least one positive skin reaction. The average age was 44 years, the sex ratio was 0.81. Sensitization to mites was the most frequent (99.6%), followed by cockroaches (71.3%), 5 grasses (71.3%), Alternaria (71%), dog (68%) and cat (63.6%). The average number of sensitivities was 5±2. Asthmatics monitored in Cotonou have multiple sensitisations dominated by mites.
ISSN:1776-2588
DOI:10.1016/j.rmr.2014.09.008