A confirmed case of measles has been identified in a King County infant, prompting concerns about potential exposure to the highly contagious disease. According to Public Health – Seattle & King County, the infant may have contracted measles during recent travel abroad.
Fortunately, the measles vaccine is highly effective, with two doses providing about 97% protection against infection. However, herd immunity requires about 95% of people to be vaccinated, as measles is highly infectious.
Measles can lead to severe complications, including ear infections, pneumonia, and even death in high-risk groups such as infants under 5 years old, pregnant people, and those with weakened immune systems.
The infant was exposed to potential locations where the disease could have spread. Those who visited these locations between February 20-25 may have been at risk of exposure. To minimize the risk of transmission, individuals should check their vaccination status and contact a healthcare provider promptly if they develop symptoms such as fever or an unexplained rash.
Measles is preventable with the MMR vaccine, which offers long-lasting protection against infection. Public Health – Seattle & King County advises that individuals who were exposed to measles at high-risk locations take precautions to protect themselves and their loved ones.
Source: https://kingcounty.gov/en/dept/dph/about-king-county/about-public-health/news/news-archive-2025/02-27-measles