Question

question 6 of 15 which of the following is not a necessary component in the chain of infection? source blood mode of transmission host

Explanation:

The chain of infection requires a source (where the pathogen lives), a mode of transmission (how the pathogen spreads), and a host (a susceptible individual). Blood is not a necessary component for all types of infections. Some infections can spread through air - borne, contact, or vector - borne means without involving blood.

Answer:

C. Blood