Which of the following does not have non - human reservoir
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
Salmonella typhi
N. Gonorrhoea
E coli
Clostridium tetani
Epidemiology