Which of the following diseases is caused by virus?
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Small pox
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Tuberculosis
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Malaria
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Cholera
A
Correct answer
Explanation
Small pox is caused by the Variola virus, making it the only viral disease in this list. Tuberculosis is caused by bacteria (Mycobacterium tuberculosis), malaria by a protozoan parasite (Plasmodium), and cholera by bacteria (Vibrio cholerae).