[Finding of anaerobic bacteria in blood cultures]

Out of the blood cultures sent to the Bacteriology Laboratory of Hospital del Niño DIF, during the period of one year, in 1.4% of samples, isolation of anaerobic bacteria was obtained. Isolation was more frequent in infants under one year of age, but specially in newborns. The species most frequently found were Propionibacterium acnes, Bacteroides melaninogenicus and Clostridium subterminale. The presence of this finding in blood cultures of infants is noted, but there is no purpose to establish a clinical relationship with the finding of this group of bacteria.