<p>A sharp rise in U.S. measles cases is linked to falling MMR vaccination rates and growing immunity gaps</p>
Measles vaccination is a preventive measure against measles, a highly contagious viral disease. The MMR vaccine, which protects against measles, mumps, and rubella, is crucial for maintaining herd immunity and preventing outbreaks.
Herd immunity occurs when a significant portion of a population becomes immune to a disease, making its spread unlikely. This can be achieved through vaccination or previous infections. Herd immunity protects those who are unable to be vaccinated, such as infants or individuals with certain health conditions.