NJ health officials are warning residents who went to a trampoline park in South Plainfield and a banquet hall in Lakewood last month that they may have come into contact with someone who had the measles.

The NJ Department of Health said a New York City resident with "a confirmed case of measles... potentially exposed individuals in Middlesex and Ocean counties on April 22nd and 23rd. Anyone who visited the following locations may have been exposed to measles: Sky Zone, 600 Hadley Rd, South Plainfield, NJ 07080 (April 22nd from 12:00 p.m. to 5:00 p.m.); River 978 Banquet Hall, 978 River Ave, Lakewood, NJ 08701 (April 23rd from 6:00 p.m. to 1:00 a.m. (April 24th)."

"The Department recommends that anyone who visited the locations listed above during the specified dates/times should contact a health provider immediately to discuss potential exposure and risk of developing the illness," the NJ DOH said in a statement. "If you have been exposed, you are at risk if you have not been vaccinated or have not had measles. Individuals potentially exposed on these dates, if infected, could develop symptoms as late as May 14th."

This year has been the biggest outbreak of measles in the United States since 1994, with 704 reported cases, according to the Centers for Disease Control and Prevention. Most of the cases are in New York City, where there are 423 reported cases, and Rockland County, where there are 206.

Highly contagious and air-borne, measles is a virus that causes a fever and rash. The most vulnerable to contracting the measles and having extremely severe reactions are babies, pregnant women, the elderly, and the immunocompromised. Health officials have repeatedly recommended that people be vaccinated with the MMR vaccine to prevent measles.

In California, a woman with the measles attended a midnight screening of Avengers: Endgame last Thursday. Orange County health officials warned residents about other buildings the woman had visited. Patch reports that the "woman, in her 20s, told officials she visited one of many countries struggling with widespread measles outbreaks."