EVALUATION OF PRIMARY PLATING MEDIA FOR ISOLATION OF GROUP-A STREPTOCOCCUS FROM DELAYED THROAT CULTURES

  • 1 January 1978
    • journal article
    • research article
    • Vol. 15  (4) , 189-191
Abstract
Sulfamethoxazole-trimethoprim blood agar (SXT-BA), neomycin blood agar (NEO-BA) and plain sheep blood agar plates (SBA) were compared for isolating group A streptococci in 1954 throat cultures. SBA and SXT-BA had similar isolation rates (approximately 75% of all positive isolates). NEO-BA was significantly better (87% recovery). A combination of any 2 media gave 92-95% recovery of group A streptococci from throat specimens.