A positive rubella virus test requires attention as to which specific indicator is positive. If the IgM is positive, then it is certain that pregnancy should be avoided. If the IgM is negative and the IgG is positive, it indicates past infection with rubella virus. There is currently no rubella virus infection in the body, and the presence of rubella virus IgG offers protective effects, preventing the virus from infecting again. Thus, under this circumstance, pregnancy can proceed normally. Rubella is a self-limiting disease, and during an infection, pregnancy should not occur because the rubella virus can pass through the placental barrier into the fetus, potentially causing restrictions in fetal growth and development.