We could not measure the total IgE, anti‐Dermatophagoides pteronyssinus (Dp) IgE, anti‐Ascaris IgE or Th cytokines in the present study, although we previously demonstrated that elevated levels of serum anti‐Ascaris IgE were associated with wheezing and BHR in children in rural Bangladesh, where up to 72% of children were infected with Ascaris.13, 14 This finding was later supported by a subsequent study conducted in the same region of Bangladesh, in 2008, when the infection prevalence was 17.4%. This evidence concerns the gene TH and infection.