A nurse is caring for an antepartum client whose laboratory findings indicate a negative rubella titer. Which of the following is the correct interpretation of this data?

A. The client requires a rubella vaccination at this time: Rubella is a live attenuated virus vaccine and is contraindicated during pregnancy. Administering it during gestation poses a risk of congenital rubella syndrome. The client must wait until after delivery for vaccination. Therefore, immunization now is inappropriate and unsafe. B. The client requires a rubella immunization following delivery: A negative rubella titer indicates that the client is not immune to rubella and is at risk for infection. Rubella infection during pregnancy can cause serious fetal anomalies. The vaccine should be administered postpartum before discharge. This ensures immunity for future pregnancies. C. The client is immune to the rubella virus: Immunity is confirmed by a positive rubella titer, not a negative one. A negative result shows susceptibility and lack of protective antibodies. Therefore, this interpretation is incorrect. The client is not immune and needs vaccination after delivery. D. The client is not experiencing a rubella infection at this time: While a negative titer may imply no current infection, it primarily reflects a lack of immunity. It does not provide diagnostic information about active or recent infection. The main concern here is the absence of antibodies. Thus, this choice misinterprets the titer result.