McDaniel CE, et al. - In this systematic review and meta-analysis, researchers examined the prevalence of UTI in infants with bronchiolitis when urinary tract infection (UTI) definition incorporates positive urinalysis (UA) results. Using the individual study definitions of UTI, the estimated prevalence of UTI in bronchiolitis was 3.1%. The UTI prevalence was 0.8% with the inclusion of a positive urinalysis result (pyuria or nitrites) as a diagnostic criterion. Overall, the investigators concluded that the estimated prevalence of concomitant UTI was less than recommended testing thresholds for bronchiolitis when a positive UA result was added as a diagnostic criterion.