Multiple choice

Which of the following is caused by a virus?

  1. T. B.

  2. Typhoid

  3. Diphtheria

  4. Polio
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Polio (poliomyelitis) is caused by the poliovirus, which is a virus that attacks the nervous system. Tuberculosis (T.B.) is caused by the bacterium Mycobacterium tuberculosis. Typhoid is caused by the bacterium Salmonella typhi. Diphtheria is caused by the bacterium Corynebacterium diphtheriae. Only polio among these options is a viral disease.

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