Delaware has confirmed its first measles case in more than a decade, an unvaccinated adult male in Kent County, with extensive contact tracing underway to identify anyone exposed. Health officials say exposed individuals will be notified and encouraged to verify their vaccination status, using the DelVAX Public Portal or consulting their primary care provider. The state emphasizes that two doses of the MMR vaccine are 97% effective at preventing measles, and urges residents to verify vaccination for themselves and their children. Measles is highly contagious and can cause serious complications such as pneumonia, brain inflammation, and death, with the virus capable of remaining infectious in the air or on surfaces for up to two hours. The case comes as neighboring Pennsylvania faces a significant outbreak, underscoring regional risk and the importance of vaccination. Those with symptoms should contact a health care provider promptly and report potential exposure when seeking care.