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June 1973

Group C Streptococcal Colonization in a Newborn Nursery

Author Affiliations

New York
From the departments of public health (Dr. Drusin), medicine (Dr. Drusin), epidemiology (Dr. Drusin and Ms Topf), and pediatrics (Dr. Ribble), The New York Hospital-Cornell Medical Center, New York City.

Am J Dis Child. 1973;125(6):820-821. doi:10.1001/archpedi.1973.04160060032006

An episode of group C streptococcal colonization occurred in a newborn nursery. Because these organisms were sensitive to bacitracin in the concentration used in the disk method, they were presumptively identified as group A streptococci. This was interpreted as the onset of a nursery outbreak of group A streptococcal infection. The presence of bacitracin-sensitive group C streptococci in a potentially significant clinical situation emphasizes the importance of performing Lancefield classification before positively identifying organisms as group A streptococci.

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