emm Typing and Validation of Provisional M Types for Group A Streptococci1

R. Facklam, B. Beall, A. Efstratiou, V. Fischetti, D. Johnson, E. Kaplan, P. Kriz, M. Lovgren, D. Martin, B. Schwartz, A. Totolian, D. Bessen (+4 others)
1999 Emerging Infectious Diseases  
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
more » ... xchange 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.
doi:10.3201/eid0502.990209 pmid:10221877 pmcid:PMC2640698 fatcat:6lervhyhrfbdpbx6kx775are4e