New Jersey health officials are advising attendees of the recent Shakira concert at MetLife Stadium to monitor for measles symptoms after potential exposure from an infectious individual.

The concert, part of Shakira's 'Las Mujeres Ya No Lloran' North American tour, took place on May 15 and 16, 2025, and featured surprise guest appearances from artists like Ozuna, Pitbull, and Wyclef Jean.

Despite a New Jersey Transit strike that limited public transportation options, concertgoers praised the event and traveled from various locations to attend.

Shakira has not publicly commented on the health alert following her performances, and requests for comments from her publicist and MetLife Stadium representatives went unanswered.

Vaccination rates in New Jersey are around 92%, but some areas have rates as low as 85%, which is concerning given that a 95% vaccination rate is needed to prevent widespread outbreaks.

While there is no confirmed outbreak in New Jersey, the U.S. has reported over 1,000 measles cases across 30 states in 2025, with significant outbreaks occurring in Texas, New Mexico, and Oklahoma.

Most vaccinated individuals are protected for life, but those vaccinated before 1968 may need to consult healthcare providers about potential boosters.

This health alert follows Shakira's hospitalization in February 2025, which forced her to cancel a concert in Peru due to an abdominal issue.

Fans expressed frustration on social media, fearing that health concerns might lead to further restrictions on attending concerts.

The Americas were declared free of endemic measles in 2016, but recent outbreaks have been linked to vaccination gaps in various regions.

Extensive studies confirm that vaccines are safe and do not cause autism, as stated by the CDC, yet misinformation continues to contribute to declining vaccination rates.

Measles can lead to severe complications, including pneumonia and encephalitis, particularly affecting unvaccinated individuals, with hospitalization occurring in 1 in 5 cases.