Diphtheria is caused by

Bacteria

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Virus

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Nematode

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None of the above

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Solution

The correct option is A Bacteria
Diphtheria is a serious bacterial infection usually affecting the mucous membranes of nose and throat. It is caused by the bacterium, Corneybacterium diphtheriae. Diphtheria toxoid, is a vaccine which mainly prevents this disease. So, the correct answer is option A.

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Mycobacterium leprae causes leprosy, Corynebacterium diphtheriae causes diphtheria and Vibrio comma causes________.

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