Prevalent virus put Holliday on bench

Matt Holliday, out since late June due to an illness that sapped his energy and resulted in body aches, on Wednesday told The Post that doctors have a diagnosis.

“There’s a virus called EpsteinBarr virus that I tested positive for,’’ the Yankees designated hitter said after an optional batting practice on the field before falling 7-6 to the Blue Jays in the finale of a three-game series at Yankee Stadium. “There are some tests that aren’t back yet.’’

According to WebMD, EpsteinBarr virus (EBV) is usually the cause of infectious mononucleosis, which can leave a person feeling fatigued for weeks or months.

According to some sources, up to 200,000 cancer cases per year may be attributed to EBV, though the American Cancer Society says “very few people who have been infected with EBV will ever develop these cancers.”

Holliday looked a lot better physically than he did when he left Chicago last week to undergo tests in New York. In batting practice, he launched balls into the left-field seats.

“I’ve been feeling much better,’’ said Holliday, who had been hitting in the indoor cage.

Because he hasn’t played since June 24, Holliday was asked if he thought he would need a minor league rehab assignment before coming off the disabled list.

“I don’t think so, it hasn’t been that long,’’ said Holliday, who is eligible to come off the DL on Thursday, an off day for the Yankees. “I haven’t discussed that with them.’’

Holliday’s problem surfaced in Oakland on June 17, when he appeared to suffer an allergic reaction to something he ate prior to the game against the Athletics. He was given Benadryl, and the doctor suggested he skip the game.

Holliday, 37, returned and started the next six games, homering in two of the first three. In those six tilts, Holliday batted .182 (4-for-22). He didn’t play from June 25-27, and was placed on the 10-day DL on June 28.

In 68 games this season, Holliday is batting .262 with 15 homers, 47 RBIs and a .877 OPS.