There are 3 different types of cytomegalovirus (CMV) infection:
- primary CMV infection - when you develop 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
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 lead to a congenital infection.