Cholera is caused by:

Fowl cholera is cauused by:

Fowl cholera is caused

Cholera is marked by acute diarrhoea and no urination

Cholera is due to

Cholera is due to

Cholera is due to

Among the following diseases Poliomyelitis, Chikungunya, Hansen's disease, cholera, Mumps, Hepatitis A. How many of the above, mentioned disease is caused by virus?