Background Rural residence is protective against atopy and wheeze–rhinitis–eczema
symptoms in developed countries, an effect attributed to farming and poor hygiene …

A cross-sectional survey was carried out in the irrigation districts of central Mexico, in which
9435 individuals participated. The health outcomes included diarrhoeal diseases and …

Rationale: Exposures to geohelminths during gestation or early childhood may reduce risk
of wheezing illness/asthma and atopy during childhood in tropical regions. Objectives: To …

Background Geohelminth infections are highly prevalent infectious diseases of childhood in
many regions of the Tropics, and are associated with significant morbidity especially among …

The ECUAVIDA birth cohort is studying the impact of exposures to soil-transmitted helminth
(STH) parasites and early-life microbial exposures on the development of atopy, allergic …

Background The association between atopy and asthma is attenuated in nonaffluent
populations, an effect that may be explained by childhood infections such as geohelminths …

Background Most childhood asthma in poor populations in L atin A merica is not associated
with aeroallergen sensitization, an observation that could be explained by the attenuation of …

To investigate whether helminth infections may affect the efficacy of vaccines by impairing
the immune response to nonparasite vaccine antigens, we compared the antibody …

A study to compare effects of mass, targeted and selective chemotherapy with levamisole
(Ketrax) as an action for the control of Ascaris lumbricoides was carried out in three …

Background Earlylife exposures to geohelminths may protect against development of
wheeze/asthma and atopy. Objective To study the effect of maternal geohelminths and …