If a pregnant woman contracts which illness, it can be very dangerous for the unborn baby?

Rubella, commonly known as German measles, is particularly dangerous for an unborn baby if the mother contracts the illness during pregnancy, especially in the first trimester. If a pregnant woman is infected with rubella, the virus can cross the placenta and potentially lead to congenital rubella syndrome. This syndrome can result in serious complications for the baby, including heart defects, vision problems, hearing impairment, and growth deficiencies.

Vaccination against rubella is an essential part of prenatal care, and women are typically advised to ensure they are vaccinated before becoming pregnant to avoid the risks associated with the illness during pregnancy. The other illnesses listed—typhoid, tetanus, and mumps—do present risks to pregnant women, but their direct effects on the fetus are not as severe or well-documented as those associated with rubella.