American Society for Microbiology, Journal of Clinical Microbiology, 10(45), p. 3408-3410, 2007
DOI: 10.1128/jcm.01393-07
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ABSTRACT We compared nasopharyngeal swabs against nasal wash cultures for detecting colonizing pneumococci and examined the effect of frozen storage in skim milk-tryptone-glucose-glycerin on culture. Among the 55 children with positive nasal wash cultures, swab cultures were positive for 47 (85%). Of the 96 swabs positive on direct plating, 94 (98%) were positive when recultured after freezing.