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Question

Biology Question on viruses and subviral particles

Rabies is caused by

A

virus

B

bacteria

C

Protozoa

D

All of these

Answer

virus

Explanation

Solution

Rabies (hydrophobia) is a 100%100\% fatal disease. It is caused by a rabies virus. The virus enters the human body with saliva of an infected (rabid) animal, generally by the bite of a dog but also of cat. Fear of water is the main symptom, hence, hydrophobia. Incubation period is commonly 131-3 months, but may vary from 1010 days to one year. Treatment of rabies was discovered by Louis Pasteur. It involves a series of 1414 injections given after the bite of a dog. Bacteria cause diseases like typhoid, diphtheria, tetanus, cholera, TB, etc. Protozoans cause diseases, like kala azar, malaria, sleeping sickness, amoebiasis etc.