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Emerg Infect Dis. 1999 Mar-Apr;5(2):247-53.

emm typing and validation of provisional M types for group A streptococci.

Author information

1
Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA. rrf2@cdc.gov

Abstract

This report discusses the following issues related to typing of group A streptococci (GAS): The development and use of the 5' emm variable region sequencing (emm typing) in relation to the existing serologic typing system; the designation of emm types in relation to M types; a system for validation of new emm types; criteria for validation of provisional M types to new M-types; a list of reference type cultures for each of the M-type or emm-type strains of GAS; the results of the first culture exchange program for a quality control testing system among the national and World Health Organization collaborating centers for streptococci; and dissemination of new approaches to typing of GAS to the international streptococcal community.

PMID:
10221877
PMCID:
PMC2640698
DOI:
10.3201/eid0502.990209
[Indexed for MEDLINE]
Free PMC Article

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