A cytomegalovirus (CMV) infection is a condition caused by a common virus. The CMV virus remains in the body for life after infection.

CMV is spread from person to person through body fluids. These include blood, saliva, urine, semen and breast milk.

Symptoms of a CMV infection may include fever, fatigue, and sore throat. But the virus rarely causes symptoms in healthy people. If you are pregnant or if your immune system is weakened, CMV is cause for concern. Pregnant people with an active CMV infection can pass the virus to their babies. Then the babies may have symptoms.

For people who have weakened immune systems, CMV infection can be fatal. The risk is particularly high for people who have had an organ, stem cell or bone marrow transplant.

Laboratory tests of blood, saliva and urine can be done to find out if you have a CMV infection. Most often, healthy people do not need treatment for CMV infections. Others who become ill are prescribed medication to help relieve symptoms.

Help limit the spread of CMV infections with good hygiene. Wash your hands often. Do not touch your face after handling used wipes or diapers. And don’t share food, drinks or utensils.