An outbreak of measles in south-western Wisconsin highlights the dangers of low immunisation rates, with health officials urging vaccination to curb the resurgence of this highly contagious disease among unvaccinated children.
Measles is once again causing concern in south-western Wisconsin, where the state Department of Health Services said on 1 September there were 102 confirmed cases and six probable cases across Grant, Iowa and Lafayette counties. Officials said the outbreak is being fuelled by local transmission, with most infections found among unvaccinated children under 18, and public health teams are working to identify people who may have been exposed.
That resurgence matters because measles is among the most contagious infections known. The US Centres for Disease Control and Prevention says it spreads through the air when an infected person breathes, coughs or sneezes, and it can remain infectious in a room for up to two hours after that person has left. In a classroom or crowded waiting area, that makes a single case enough to spark a chain of infections.
Symptoms usually begin with fever, cough, a runny nose and red eyes before the telltale rash appears, typically starting at the hairline and moving down the body. The CDC says complications can include pneumonia, encephalitis, which is swelling of the brain, and death, with young children and adults over 20 at highest risk of severe illness. The agency and Johns Hopkins Medicine also note that measles can be especially dangerous for pregnant people and those with weakened immune systems.
Public health experts say the solution is straightforward: vaccination. The MMR shot, which protects against measles, mumps and rubella, remains the main defence, and health officials urge anyone exposed or showing symptoms to call ahead before visiting a clinic so staff can limit contact with others. For families headed back into classrooms, the Wisconsin outbreak is a reminder that falling immunisation coverage can quickly turn a preventable disease into a community problem.
Disclaimer: This content is for informational purposes only and is not intended to be a substitute for professional medical judgment, advice, diagnosis, or treatment.
