Answer: Unvaccinated adults who've never had chickenpox and are at high risk of exposure.
Explanation: Unvaccinated adults who've never had chickenpox and are at high risk of exposure.Pregnant women.People who have weakened immune systems, such as those who are infected with HIV, or people who are taking immune-suppressing medications.People who are allergic to gelatin or the antibiotic neomycin. Hope this helps!