Pregnant women are sometimes screened for rubella virus antibodies. If the test reveals positive rubella virus antibodies, rubella virus infection can be considered, but it needs to be clarified whether it is IgM antibodies or IgG antibodies, both of which can be positive, with different antibodies representing different meanings. If it happens in early pregnancy, the virus can enter the fetus through the placental barrier, which can easily lead to embryonic abortion and spontaneous miscarriage, and can also lead to congenital rubella syndrome in the fetus. If it occurs in the middle or late stages of pregnancy, it can lead to fetal malformation or even stillbirth. If you have been diagnosed with rubella in the first three months of pregnancy, it is advisable to have an abortion, and women of child-bearing age who have recovered for the first time should not get pregnant within six months; 2. 3. IgG and IgM are both positive: this indicates that the infection is still in progress and is tending to recover, so it is important to take this into account. Note: If a pregnant woman is negative for rubella virus antibodies before pregnancy, it is recommended that rubella vaccine be given for protection and to achieve eugenics.