Overview

• The New Jersey Department of Health confirmed that an out-of-state individual with measles attended Shakira's May 15 concert at MetLife Stadium, exposing tens of thousands to the virus.
• Measles is highly contagious, spreading through airborne droplets that can linger in enclosed spaces for up to two hours after an infected person leaves.
• Concert attendees are advised to monitor for symptoms, which include fever, cough, runny nose, watery red eyes, and a rash, until June 6, as symptoms can take up to 21 days to appear.
• No secondary cases linked to the concert have been reported as of May 20, but the U.S. has seen a resurgence of measles in 2025, with over 1,000 confirmed cases and three deaths nationwide.
• Health officials stress the importance of the MMR vaccine, which is 97% effective after two doses, as the best prevention against measles and its potential complications.