How is C. diphtheriae transmitted?

Corynebacterium diphtheriae, the bacterium that causes diphtheria, is primarily transmitted from person to person. The primary mode of transmission is through respiratory droplets when an infected person coughs or sneezes. Direct contact with contaminated surfaces or fomites can also lead to infection, especially if a person touches their mouth or nose afterward. This highlights the importance of hygiene and isolation practices in controlling the spread of this pathogen.

Additionally, while options like contaminated food, insect bites, and contaminated water can transmit various pathogens, they are not mechanisms for the transmission of C. diphtheriae. The unique respiratory and direct contact transmission routes are critical to understanding how outbreaks can occur and the importance of vaccination and prompt treatment in preventing the disease's spread. Recognizing these methods aids in effective public health strategies to manage and prevent diphtheria.