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J Med Microbiol 58 (2009), 296-302; DOI: 10.1099/jmm.0.006031-0
© 2009 Society for General Microbiology
ISSN 0022-2615

Evaluation of sequential multiplex PCR for direct detection of multiple serotypes of Streptococcus pneumoniae from nasopharyngeal secretions

Martin Antonio1, Ishrat Hakeem1, Kawsu Sankareh1, Yin Bun Cheung2 and Richard A. Adegbola1

1 Bacterial Diseases Programme, Medical Research Council (MRC) Laboratories, Banjul, The Gambia

2 Department of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, UK

Correspondence
Martin Antonio
mantonio{at}mrc.gm

Received August 21, 2008
Accepted October 31, 2008

Sequential multiplex PCR was evaluated for detection of multiple Streptococcus pneumoniae serotypes directly from nasopharyngeal secretions. A total of 279 nasopharyngeal swab samples were tested blindly. When limited to the 29 serotypes identifiable by the molecular method, the mean number of serotypes identified by the conventional latex/Quellung method was 0.85, which was significantly lower than that by the molecular method (P <0.0001). The multiplex PCR method identified significantly more serotypes than the latex/Quellung method if limited to the 29 serotypes (P=0.001 and P=0.014, respectively).






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