Infants with the TT genotype of CD14 (rs2569190) had an increased risk of URTIs and LRTIs, especially bronchiolitis, if they were exposed to high levels of perinatal anxiety, compared with infants exposed to low levels of perinatal anxiety (aOR 2.51, 95% CI: 1.01–6.24; aOR 4.60, 95% CI: 1.29–16.41; aOR 4.31, 95% CI: 1.17–15.79, respectively) (Additional file 3: Table S2). The gene discussed is CD14; the disease is bronchiolitis.