Comparison of sensitisation to prevalent allergens in children vesus adolescents in the same geographical area.
Saturday, March 3, 2018
South Hall A2 (Convention Center)
Jose Alessandro Bastidas-Parlanti, Damian López-Sánchez, MD, Maria Luisa Somoza, MD, Elisa Haroun, Natalia Blanca-López, MD, PhD, Laura Victorio-Puche, MD, María Vazquez de la Torre, MD, PhD, Maria Isabel Garcimartin, MD, Miguel Blanca, MD PhD, María Gabriela Canto, MD, PhD

Although the prevalence of atopy and sensitisation to inhalants and food allergens is increasing over the years, this is related to age and level of allergen exposure. Our aim was to estimate prevalence of sensitisation to relevant pollens in a population living in well defined biosystem located in the South-East of Spain.


Children and adolescents at age school (3-19 y.o) and born in the same village were included in the study. An individual questionnaire adapted to population studies was made that included personnel and family history of allergy. Skin testing by prick with a panel of prevalent inhalant and food allergens was made. Sensitisation to the three most relevant pollens in the area was compared.


We included a total of 600 children and adolescents. From these 307 were from 3 to 9 y.o. (Group A) and 293 from 10 to 19 y.o. (Group B). In group A 47% were male and in B the 41% (P<0.01). Comparison of pollen sensitivity between both groups showed the following results: Grass pollen (8.5% v 25%, P<0.0001), Olive (22% v 36%, P<0.001), Salsola kali (10% v 21 %, P<0.001).


In the same community with equivalent pollen exposure and environmental conditions, there was an increasing in sensitisation that was more than double in adolescents.