True about kala-azar -

Ans. is 'c' i.e., Non-human reservoirs are present o Males are affected twice as often as famales. o The incubation period in man is quite variable, generally 1 to 4 months; range is 10 days to 2 years. o Kala-azar is mostly confined to plains, it does not occur in altitudes over 2000 feet (600 metres). o It has been known to occur epidemically & endemically in well-defined areas in the eastern sector of the country. Presently the endemic states are Bihar, Jharkhand, Uttar Pradesh & West Bengal. o Reservoirs of Infection Although Indian Kala-azar is non-zoonotic but in general, it has animal reservoir (i.e., non-human reservoir). There is a variety of animal reservoirs e.g., dogs, jackals, foxes, rodents & other mammals. Indian kala-azar is considered to be a non-zoonotic infection with man as the sole reservoir. This assumption is based largely on the absence of evidences.