Question

An agent is highly contagious; upon introduction to a population, it spreads rapidly throughout the population. It often causes illness, but not serious illness such as death. Which best describes the agent?

Answer 1

Pathogen / Infectious agent is an agent is highly contagious; upon introduction to a population, it spreads rapidly throughout the population. It often causes illness, but not serious illness such as death

Step-by-step explanation:

Pathogens are the infectious agents which are responsible to cause a diesease or illness to the specific host.

Pathogenic organisms may inlcude bacteria , viruses , fungi , protozoas.

The pathogen cause a disease or illness by following steps :

1) Transmission

2)Adherence to cell surface

3) Invasion , inflammation and intracellular survival.

4) Toxin production.