A) virus
B) bacteria
C) Protozoa
D) All of these
Correct Answer: A
Solution :
Rabies (hydrophobia) is a 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 1-3 months, but may vary from 10 days to one year. Treatment of rabies was discovered by Louis Pasteur. It involves a series of 14 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.
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