individuals with an impaired or inefficient immune response.

having an immune system that is impaired.

A state when the body's immune system defenses are lowered and the body is less able to resist infections and tumors.

an impaired immune response that makes the host particularly susceptible to infection.

When the immune system is weak and cannot offer resistance to infection.

Refers to an immune system in which the ability to resist or fight off infections and tumors is subnormal.

an abnormal condition in which one's ability to fight infection is decreased. This can be due to a disease process, certain medications, or a condition present at birth.

Is when an immune system's ability to fight off infections and tumors is below normal.