Here's everything you need to know about hand, foot and mouth disease

For the second time in a little over a week, a New York pitcher, this time the Yankees J.A. Happ, has come down with hand, foot and mouth disease, which is rarely ever seen in adults.

So what is this disease, and why is it making the rounds of New York baseball teams.

The disease is caused by a virus, also called coxsackie or enterovirus, and patients often break out in ulcers or sores in or around their mouth, and blisters or rashes on their feet, legs and backsides.

Most often, hand, foot and mouth disease is seen in children under 10. But it is contagious and therefore adults can contract it by coming in contact with someone who already has the virus, or by touching an object that has already been contacted by someone in the contagious stages of the disease.

The Mets said Noah Syndergaard contracted the disease at a children’s camp he was attending, but the Yankees have not yet announced how J.A. Happ came in contact with it.

Early symptoms include fever and sore throat, often making it hard to swallow.

Patients are most contagious in the first seven days, and usually it goes away after 7-to-10 days. Syndergaard was placed on the 10-day DL last Sunday, and he is scheduled to start on Wednesday, which would be 10 days since it was announced he had contracted the virus.

There is no treatment or vaccine for it, so the only thing to do is give it time, rest, and stay far away from your teammates.