McDaniel CE, et al. - In this investigation, researchers analyzed the prevalence of urinary tract infection (UTI) in infants with bronchiolitis when positive urinalysis (UA) results are incorporated into the UTI definition. 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. According to this systematic review and meta-analysis, 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.