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There are 3 different types of cytomegalovirus (CMV) infection:

  • primary CMV infection - when you are infected with CMV for the first time
  • CMV reactivation - when a previous infection becomes active again
  • CMV reinfection - when you are infected with a different strain of the CMV virus

Symptoms of cytomegalovirus (CMV) in pregnancy

Preventing cytomegalovirus (CMV) in pregnancy

Congenital CMV in unborn or newborn babies

Congenital CMV is a primary CMV infection in an unborn baby that develops when you are pregnant. It infects your unborn or newborn baby. All 3 types of CMV infection in pregnancy can potentially lead to a congenital infection. But a primary CMV infection poses the greatest risk of severe disease to the baby.

Page last reviewed: 12 February 2024
Next review due: 12 February 2027

This project has received funding from the Government of Ireland’s Sláintecare Integration Fund 2019 under Grant Agreement Number 123.