Season of the first trimester of pregnancy predicts sensitisation to food allergens in childhood: a population-based cohort study from Finland

A population-based cohort study linking information from a questionnaire survey to allergy tests performed on the target population and regional pollen counts. Population Children born in 2001-6 who were resident in the province of South Karelia, Finland, at the time of the survey (N=5920). Main Outcome Measures A positive result in any food allergy test or food-specific immunoglobulin E test (sIgE). Results The cumulative incidence of a positive food allergy test up to the age of 4