Do you need a measles booster? Experts explain

Key Points:

• Giant pharmacies in Lancaster County, Pa., have seen a significant increase in people seeking measles vaccinations, offering both walk-in and scheduled appointments amid rising cases, including four confirmed among vaccinated individuals.
• Dr. Paul Offit from the Children's Hospital of Philadelphia explains that measles immunity relies on immunological memory cells rather than persistent antibodies, making boosters generally unnecessary for those previously vaccinated or infected.
• Immunity levels vary by birth year and vaccination history: individuals born before widespread vaccination likely have lifelong immunity, while those vaccinated with two doses after 1989 have a 97% chance of long-term protection.
• Measles cases predominantly occur in unvaccinated individuals, with breakthrough infections in vaccinated people being rare and typically much milder, reducing risks of severe illness or hospitalization.
• Pharmacists encourage the public to ask questions about measles vaccines and protection, highlighting increased health awareness and prioritization as a positive outcome of the current outbreak.