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immunodeficiency

A state in which the immune system is weaker than normal and cannot fight infection well.

im-yoo-noh-dih-FISH-un-see noun

Word parts

What it means

A weak or missing part of the immune systemih-MYOON SIS-tumThe body's defense system of cells, tissues and organs that fights germs and other foreign substances.Full entry . A person can be born with it (primary immunodeficiency) or develop it later (secondary), most often from HIV, chemotherapy, long-term corticosteroids, drugs given after an organ transplant, malnutrition or older age. People with immunodeficiency get infections more often, get sicker from them, and may not show the usual signs, such as a high fever or pus.

For the nurse

Protect these clients from infection: careful hand hygieneHAND HY-jeenCleaning the hands with soap and water or an alcohol-based hand rub.Full entry , no visitors who are sick, and protective precautions as ordered. Report even a small rise in temperature, since it may be the only sign of a serious infection. Live vaccines are often not given.

At a glance

Spanishinmunodeficiencia
Also writtenimmunodeficiencies, immunodeficient

Related terms

antineoplastic

A drug used to treat cancer by killing cancer cells or stopping them from growing and dividing.

corticosteroid

A drug that acts like the hormones of the adrenal glands, used mainly to calm inflammation and the immune system.

infectious disease

An illness caused by a germ such as a bacterium, virus, fungus or parasite.

hand hygiene

Cleaning the hands with soap and water or an alcohol-based hand rub.

immune system

The body's defense system of cells, tissues and organs that fights germs and other foreign substances.

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