Bacitracin sensitivity is used to differentiate ?: (A) Group A Streptococcus from staphylococci, (B) Group A streptococcus from other Beta hemolytic streptococci, (C) Group A streptococcus from Gamma hemolytic streptococci., (D) Group A streptococcus from Alpha hemolytic streptococci
Answer is B. Ans. is 'b' i.e., Group A streptococcus from other Beta hemolytic streptococci The bacitracin susceptibility test is used to distinguish Group A streptococci, from other streptococci. This test is used to determine the effect of small amount of bacitracin (0.04U) on an organism.