Which is the drug to treat NARST (Nalidixic acid resistant S.typhi)?: (A) Chloramphenicol, (B) Azithromycin, (C) Ciprofloxacin, (D) Septran
Answer is B. Nalidixic acid-resistance S.typhi (NARST): Surrogate marker of decreased susceptibility to ciprofloxacin. Rx : Azithromycin , third-generation cephalosporins. Aztreonam and Imipenem are the potential second line drugs.