SAN Francisco 49ers defensive end Tarron Jackson is “conscious and communicating” after a terrifying injury during training camp.

Jackson, 27, was rushed to hospital on Sunday after a serious injury during the 49ers practice session.

Jackson, who was signed to a futures contract after spending the end of last season on the practice squad, was being blocked by offensive tackle Isaac Alarcon when he went down injured.

The scary incident left 49ers practice stunned to silence for over six minutes, according to ESPN.

Jackson was motionless for a short period of time before he was then able to move his hands.

The fourth-year pro was taken off the field seven minutes after his injury and taken to Stanford Hospital in an ambulance just 15 minutes later.

Head coach Kyle Shanahan offered a positive update when speaking to the media later in the day.

He said: “[You’re] always scared when someone gets taken off on a stretcher.

“He’s conscious, communicating with us, can feel all his extremities and they’re taking him down to Stanford now to start further testing.

“So, hopefully we cleared the real scary stuff.”

Revealing that the team continued to practice afterwards, Shanahan added: “We were close to him so we could hear him talking and we could see everything moving.

“I just told the guys that, which eases them up a little bit with the biggest fears and asked them if they were okay to continue to go.

“They all yelled yes and we finished the last period.”

Players had taken a knee during the scary moments of Jackson being treated.

Running back Christian McCaffrey revealed he was praying for Jackson after the scare.

He said: “It’s never good. You’ve just got to pray for the best in situations like that.

“It’s definitely a reminder not to take any day for granted. You’re in a non-padded practice and you get carted off.

“It’s a serious sport and just pray for the best for him.”

The 49ers will begin their preseason action on August 9 when they play the Denver Broncos at Levi’s Stadium.