In patient with Listeria meningitidis who is allergic penicillin the treatment of choice is:
Vancomycin
Gentamycin
Trimethoprim - sulfamethoxazole
Ceftriaxone
Ans. (c) Trimethoprim - sulfamethoxazole DOC for listeriosis (non-pregnant, neonate, pregnant) is ampicillin or penicillin often in combination with aminoglycosides. During last month of pregnancy (in case of penicillin allergy), may be treated with erythromycin. Otherwise in all cases of penicillin allergy DOC is trimethoprim-sulfamethoxazole