Home Biology Human Health and Disease Human Disease ( Dengue, Chikungunya ) Diphtheria is caused by
Biology Human Health and Disease Human Disease ( Dengue, Chikungunya ) Single Correct MCQ
Published on: August 21, 2026

Diphtheria is caused by

A
Toxins secreted by virus into the host tissues
B
Excessive immune response by the host's body
C
Toxins released by dead bacteria into the host's body
D
Toxins secreted by live bacterial cells into the host tissues

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