Thousands of people who attended a Shakira concert in New Jersey last week received an urgent health warning following a measles epidemic. The Colombian singer’s show at the Metlife Stadium on May 15 could prove to be the epicenter of an important event on the Superspreer after health officials identified a spectator “associated with a newly identified case of measles in a non-NJ resident who attended a concert in the NJ while being infectious”. Measles is one of the most contagious diseases in the world, and although no cases have yet been reported, Metlife has a maximum capacity of 82,000 and infected people cannot start developing symptoms before June 6. Although the disease was officially eliminated in the United States in 2000, it has experienced resurgence in recent years due to the drop in vaccination rates. Last week, the CDC confirmed more than 1,000 cases in 31 states, which has led to at least three deaths so far. The warning follows a similar alert issued by New Jersey health officials last week after an infected traveler went through Newark Liberty International Airport, potentially exposing hundreds of additional people to infectious disease.