The MMR vaccine contains weakened forms of the measles, mumps, and rubella viruses to stimulate the immune system without causing illness.
In the US, the CDC recommends two doses of the MMR vaccine for most individuals: the first dose at 12-15 months of age and the second dose at 4-6 years of age.
The MMR vaccine is highly effective, providing immunity to measles in about 93% of individuals after one dose and around 97% after two doses.
Extensive research and monitoring have shown that the MMR vaccine is safe, with the most common side effects being mild and temporary, such as soreness at the injection site or a low-grade fever.
While most states require children to be vaccinated against measles before attending school, some allow exemptions for medical, religious, or philosophical reasons, which can impact community immunity.
Achieving and maintaining high vaccination rates is crucial for herd immunity, which protects vulnerable individuals who cannot be vaccinated, such as infants and those with certain medical conditions.
Vaccination against measles not only protects individuals from the disease but also helps prevent outbreaks, reduces healthcare costs, and saves lives by preventing serious complications associated with measles infection.