Fifth's Disease Information
About 50-80% of pregnant women are immune to parvovirus B19. So, these women and their babies are usually protected from getting the virus and fifth disease. Pregnant women who are not immune usually do not have serious complications after they are exposed to others with fifth disease. They usually have only mild illness. Also, their babies usually do not have any problems. However, sometimes a baby will develop severe anemia, and the woman may have a miscarriage. But, this is not common. It happens in less than 5% of all pregnant women with parvovirus B19 infection and more commonly during the first half of pregnancy. Pregnant women who are not immune and are not currently infected with parvovirus B19 may want to stay away from people with fifth disease. This should be discussed with your healthcare provider.