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Volume 5, Number 2—April 1999

Synopsis

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

R. Facklam*Comments to Author , B. Beall*, A. Efstratiou†, V. Fischetti, D. Johnson§, E. Kaplan§, P. Kriz¶, M. Lovgren#, D. Martin**, B. Schwartz*, A. Totolian††, D. Bessen‡‡, S. Hollingshead§§, F. Rubin¶¶, J. Scott##, and G. Tyrrell¶
Author affiliations: *Centers for Disease Control and Prevention, Atlanta, Georgia, USA; †Central Public Health Laboratory, London, United Kingdom; ‡The Rockefeller University, New York, New York, USA; §University of Minnesota, Minneapolis, Minnesota, USA; ¶National Institute of Public Health, Prague, Czech Republic,; #National Center for Streptococcus, Edmonton, Alberta, Canada; **Communicable Disease Group, ESR, Porirua, New Zealand; ††Institute of Experimental Medicine, St. Petersburg, Russia; ‡‡Yale University, New Haven, Connecticut, USA; §§University of Alabama, Birmingham, Alabama, USA; ¶¶National Institutes of Health, Bethesda, Maryland, USA; ##Emory University, Atlanta, Georgia, USA

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Table

Recommended action for M and emm designation for provisional M typesa

Provisional type ID number CDC ID number New emm or M type
PT180(UK)b NCTC12062 SS-1395 82
PT2110(UK) NCTC12064 SS-1400 83
PT2233(UK) R75/2233 SS-1449 84
PT2612(UK) R76/2612 SS-1447 85
PT2631(UK) R76/2631 SS-1448 86
PT2841(UK) NCTC12065 SS-1399 87
PT3875(UK) R67/3875 SS-1455 88
PT4245(UK) NCTC12067 SS-1397 89
PT4931(UK) NCTC12068 SS-1396 90
PT5757(UK) NCTC12056 SS-1398 91
PT5118(NZ) SS-1460 92
PTPotter41(UK) R76/2631 SS-1493 93

aFor definitions of M and emm designations, see section in text, Designation of M, Provisional M, and emm Sequence Types.
bAbbreviations; UK= United Kingdom, NZ= New Zealand.

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1Information in this report was first presented at an International Workshop on Demonstration of emm Typing and Validation of Provisional M types for Group A Streptococci held at the Centers for Disease Control and Prevention, Atlanta, Georgia, August 26-28, 1997.

2Centers for Disease Control and Prevention, Atlanta, Georgia, USA; Central Public Health Laboratory, London, United Kingdom; The Rockefeller University, New York, New York, USA; University of Minnesota, Minneapolis, Minnesota, USA; National Institute of Public Health, Prague, Czech Republic, National Center for Streptococcus, Edmonton, Alberta, Canada; Communicable Disease Group, ESR, Porirua, New Zealand.

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