Measles cases are on the rise all over the United States. In response, health officials are recommending all adults review their vaccination status, and if eligible—get a booster. As of April 3, 2025, the Centers for Disease Control and Prevention (CDC) have confirmed 607 cases of measles. As we’ve shown, the real number of cases is probably much higher. This alarming trend has sparked a widespread and substantial outrage. People want to know how effective vaccinations are, how best to protect those who are most at risk.
Most adults born after 1957 were vaccinated against measles as children. Yet many of them conceivably would have received a more dangerous inactivated virus vaccine between 1963-67. Understanding this historical context is important. Health care leaders, including Health and Human Services Secretary Robert F. Kennedy Jr., are calling for widespread measles vaccination on this Measles Awareness Day.
“The most effective way to prevent the spread of measles,” – Robert F. Kennedy Jr.
If you don’t know if you’re immune to measles, get the Immunoglobulin G (IgG) test. This simple blood test will provide you with definitive answers about your immune status. High levels of IgG antibodies show that you are immune, so low or no presence means you may need a vaccine.
The MMR vaccine, which protects against measles, mumps, and rubella, is still the gold standard in vaccination programs. Health officials are focusing on reaching certain social demographics that require two doses of the MMR vaccine in adulthood. This is the case only if they are getting the vaccine for the first time. They experience increased vulnerability to infection than their counterparts.
In discussing the need for booster vaccinations, Cutler noted specific populations that should take action:
“You might need a booster if you are a child who only received one dose of vaccine, an adult who received the inactivated vaccine, a high-risk adult who may be exposed to measles, or anyone whose blood test shows a lack of immunity,” – Cutler.
Vaccination is the only way to end the severe and extensive outbreak that rages on. Some adults, who had never previously received a measles vaccine, may be reluctant to receive the live virus shot due to possible health risks. That’s why public health officials are still pushing for education and outreach efforts, to ensure people understand the benefits and safety of vaccination.
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