<prompt> All of the following are therapeutic uses of penicillin G, exceptBacterial meningitisRickettsial infectionSyphilisAnthrax  <response>: Ans. is b i.e., Rickettsial infection Penicillin G is the DOC for 1. Meningococcal meningitis 7. Leptospira 2. Bacillus anthracis anthrax 8. Actinomyces israelii Actinomycosis 3. Clostridium perfringens gas gangrene 9. Borrel i a burgdorferi Lyme disease 4. Clostridium tetani tetanus 10. Enterococci 5. Corynebacterium diphtheriae 11. Streptococci 6. Treponema pallidum syphilis 12. Susceptible pneumococci 