New Jersey health officials have issued a public advisory following a potential measles exposure during the Shakira concert at MetLife Stadium in East Rutherford. The event, held last Thursday, drew thousands of fans—among them, a non-New Jersey resident who was later confirmed to be infected with the virus.

The New Jersey Department of Health (NJDOH) revealed on Tuesday that anyone who attended the concert could have been exposed and should monitor for symptoms. They strongly urge individuals who suspect they may be infected to contact a healthcare provider before showing up at a medical office or emergency department, as walking in without notice may risk further transmission. Symptoms may appear as late as June 6 for those exposed.

MetLife Stadium at East Rutherford, NJ.

Those most vulnerable include people who have never contracted measles and those who have not received full vaccination. The MMR vaccine—administered in two doses—remains the most reliable protection against measles, mumps, and rubella. Officials emphasize that the vaccine also reduces the risk of severe complications tied to these illnesses.

Staying current with routine vaccinations, particularly the MMR, is essential, health officials say. This is especially true for international travelers. Infants aged 6 to 11 months should receive one dose before departure, followed by the standard two doses after their first birthday.

Common symptoms of measles include high fever, cough, runny nose, red watery eyes, and a rash that usually emerges three to five days after the initial symptoms. The rash often starts as flat red spots near the hairline, then spreads across the face, neck, and body. Measles can lead to serious outcomes, such as pneumonia, encephalitis (brain swelling), and in pregnant individuals, risks like miscarriage, premature labor, or low birth weight.

The virus is highly contagious, spreading through the air via coughs or sneezes, and can linger for up to two hours even after the infected person has left the area. It can also be contracted through contact with contaminated mucus or saliva.