*CSF, cerebrospinal fluid; epf extracellular protein factor; ID, identification; mrp, muramidase released protein; NVE, native valve endocarditis; sly, suilysin; ST, sequence type as defined by multilocus sequence typing; STSLS, streptococcal toxic shock–like syndrome. †Untypable by both serologic and molecular methods. ‡Precise age not available. §Only the isolate recovered from CSF was included in this investigation, although both were typed.