DCA media used in differentiation of which infection?: (A) Salmonella, (B) Staph aureus, (C) H. influenzae, (D) Bordetella
Answer is A. Ans. is 'a' i.e., Salmonella Deoxycholate citrate agar (DCA) medium is a selective medium for Salmonella and Shigella. It is also used as a differential medium to differentiate lactose fermenter from non-lactose fermenting enteric pathogens. Salmonella and Shigella (except Shigella Sonnei) are non-lactose fermenters.