TY - JOUR AU - Facklam, R. AU - Beall, B. AU - Efstratiou, A. AU - Fischetti, V. AU - Johnson, D. AU - Kaplan, E. AU - Kriz, P. AU - Lovgren, M. AU - Martin, D. AU - Schwartz, B. AU - Totolian, A. AU - Bessen, D. AU - Hollingshead, S. AU - Rubin, F. AU - Scott, J. AU - Tyrrell, G. T1 - emm Typing and Validation of Provisional M Types for Group A Streptococci T2 - Emerging Infectious Disease journal PY - 1999 VL - 5 IS - 2 SP - 247 SN - 1080-6059 AB - 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. KW - United States KW - Czech Republic KW - Russia KW - New Zealand KW - Canada KW - United Kingdom KW - England DO - 10.3201/eid0502.990209 UR - https://wwwnc.cdc.gov/eid/article/5/2/99-0209_article ER - End of Reference