I believe the answer is C
Answer:
- source or reservoir of infectious agents
- susceptible host with a portal of entry receptive of the agent
- mode of transmission for the agent
Explanation:
Chain of infection is the term that represents a set of related elements (source of infection, route of elimination, route of transmission, gateway) that demonstrates the process of spreading microorganisms that can cause disease in humans and other animals. . The existence of a chain of infection in healthcare settings requires the existence of a source or reservoir of infectious agents, the existence of a susceptible host with an infectious agent receptive entry portal, and the existence of a mode of transmission to the infectious agent.
Answer:
Acquired immunity
Explanation:
Acquired immunity is a type of immunity that we develop when we get exposed to some antigens. Our immune systems can build a defense against those antigens and next time when we encounter those same antigens our body will know how to react. This immunity builds up over time in order to have an answer ready when a threat presents itself.
Answer:
The answer is D.
Explanation:
Combination of genes inherited from each parent
