Three San Diego State football players have been diagnosed with chickenpox, raising concerns that the highly contagious disease could spread to their Aztecs teammates.

SDSU began training camp this week, so the players have been in close contact with each other for practices, team meetings and meals. On Friday, the players were on buses together when they traveled back and forth from campus for a practice at MCAS Miramar.

“I’m afraid that it might not be just three of them,” SDSU head coach Rocky Long said after Saturday night’s scrimmage. “The team’s been together for a whole week now.

“It’s dramatic if we lose a few more. ... What if it hits 10 other ones?”

The three players with chickenpox are junior offensive lineman Ryan Pope and senior linebackers Tyler Morris and Temerick Harper. Pope is a starter at right tackle, Morris and Harper are backup linebackers, but both play extensively on special teams.

“Tyler Morris was the first one to get it,” Long said. “Temerick Harper sits right next to him in meetings and Pope is Temerick Harper’s roommate.

“(Senior safety) Trey Lomax is Tyler Morris’ roommate, but Trey had it when he was a little kid.”

Long said Morris found out Friday that he had chickenpox and did not travel with the team to Miramar.

Both Pope and Harper participated in Friday’s practice at Miramar. They reported being sick on Saturday when they arrived for a midday walk-through. A doctor met with them on Saturday night and prescribed medication, Long said, as their teammates were taking the field for the Aztecs’ first scrimmage.