Comparison of media and techniques for detection of group A streptococci in throat swab specimens

Publisher Website
Google Scholar
Abstract
Detection of group A streptococci in primary throat cultures [human] was compared by using aerobic and anaerobic incubation with selective and nonselective media. Sheep blood agar plates incubated anaerobically detected 98% of the group A streptococci, whereas aerobically incubated blood agar plates stabbed at the time of inoculation detected only 63%. Blood agar plates containing sulfamethoxazole and trimethoprim (23.75 and 1.25 .mu.g/ml, respectively) detected only 70% of group A streptococci when incubated aerobically and 84% when incubated anaerobically.