The genotypes and allele frequencies of cases (children hospitalized with bronchiolitis) and controls (healthy children from a birth cohort study) did not differ substantially with respect to TLR7 rs179008, TLR8 rs2407992, TLR9 rs187084 or TLR10 rs4219009 polymorphisms (Table 1). Here, TLR7 is linked to bronchiolitis.