HEALTH
Measles Outbreak: Vaccine Facts vs. Myths
USAThu Mar 13 2025
Measles cases are surging across Texas, New Mexico, and Oklahoma, with 258 confirmed cases. Health officials are pushing for more people to get the measles-mumps-rubella (MMR) vaccine to curb the spread. The vaccine is highly effective, but misinformation is causing confusion.
The US Health and Human Services Secretary Robert F. Kennedy Jr. recently spoke about the measles outbreak. He emphasized the importance of informed choices when it comes to vaccination. However, he also made some claims that experts disagree with. Kennedy suggested that the vaccine's immunity might fade over time, leading to outbreaks. He also mentioned that natural immunity from actually getting measles might be better than vaccine-induced immunity.
Experts, however, disagree with this. They point out that the vaccine provides lifelong immunity for most people. Even if antibody levels decrease, the body's immune memory cells can still fight off the infection. Dr. Michael Mina, an expert in infectious diseases, stated that the current outbreak is primarily due to unvaccinated individuals.
Natural immunity comes with serious risks. Measles can cause severe complications, including pneumonia, encephalitis, and even death. Additionally, measles can erase the body's memory of how to fight other infections, a condition known as "immune amnesia. " This puts individuals at risk for various other infections.
Kennedy also mentioned that vaccine-induced immunity might not be passed through breast milk, but experts say this is incorrect. Maternal antibodies from vaccination can still protect infants in their first six months of life.
Kennedy also discussed adverse events from the MMR vaccine, claiming it causes serious illnesses and deaths. Experts strongly disagree. The vaccine is incredibly safe, with common side effects being mild, such as a low-grade fever or temporary rash. Serious side effects are extremely rare.
The goal of vaccination is to provide immunity without the risks of natural infection. Vaccines induce immunity similar to natural infection but without the dangers. This is why health officials strongly recommend vaccination.
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questions
How does the waning immunity from the vaccine affect the overall immunity of a population?
How do we reconcile the idea of waning immunity with the fact that measles was declared eliminated in the US in 2000?
Could the pharmaceutical industry be benefiting from the spread of misinformation about vaccine safety?
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