Which of the following clients would NOT be an appropriate candidate for the measles, mumps, and rubella (MMR) vaccine?

Choice A reason: Mild to moderate HIV infection does not contraindicate MMR vaccination; however, severe immunosuppression may require deferral. Choice B reason: MMR is a live attenuated vaccine and is contraindicated in pregnancy due to potential risk to the fetus. Vaccination should be deferred until postpartum. Choice C reason: History of neomycin allergy may contraindicate MMR, but mild or past reactions may be assessed individually; often, only severe anaphylaxis is an absolute contraindication. Choice D reason: A school-age child with HIV who is not severely immunocompromised may safely receive the MMR vaccine to prevent infection.