HIV/AIDS Glossary

Live Attenuated

Synonym(s): Attenuated

A disease-causing virus or bacterium that is weakened in a laboratory so it cannot cause disease. Live attenuated viruses are often used as vaccines because, although weakened, they can stimulate a strong immune response. However, because of the remote possibility that a live attenuated virus could cause disease, people with HIV should talk to their health care providers before receiving live attenuated vaccines.

Related Term(s): Vaccine

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