Which of the following does not have non - human reservoir: (A) Salmonella typhi, (B) N. Gonorrhoea, (C) E coli, (D) Clostridium tetani
Answer is A. Reservoir of infection: man is only the known reservoir of infection, viz cases and carries Cases- mild , moderate and severe Carriers -temporary or chronic Ref: 25th edition, Park's Textbook of Preventive and Social Medicine, Page no. 257