Hill is the only player on the team believed to have swine flu and other players are being monitored, Texans vice president of communications Tony Wyllie said Friday.
Hill spent two nights in the hospital and told KRIV-TV in Houston that he was released from the hospital Friday morning.
"In the beginning doctors thought it was pneumonia," Hill told the station. "It wasn't. Then (Thursday) results for swine flu came back and it was positive. I was already taking medicine for both."
STEELERS: Running back Willie Parker did not practice for a third consecutive day on Friday and is not expected to play against the San Diego Chargers on Sunday.
Giants: Running back Ahmad Bradshaw returned to practice Friday and will likely play in Sunday's game at Kansas City.
But four other injured players -- defensive lineman Chris Canty, cornerback Aaron Ross , wide receiver Domenik Hixon and ex-Georgia running back Danny Ware -- will sit out.
BROWNS: Might be without running back Jamal Lewis (hamstring) and kicker Phil Dawson (calf) for the second consecutive game.
Rams: Kyle Boller will make his first start at quarterback for St. Louis on Sunday as Marc Bulger rests his injured shoulder.
FINED: Oakland defensive lineman Richard Seymour, a former Georgia player, was among the players fined Friday for actions in last week's games.
Seymour was fined $7,500 for unnecessary roughness against Denver tackle Ryan Clady . After a play was over, Seymour pulled Clady by the hair.
Seattle DE Patrick Kerney was fined $5,000 for roughing the passer when he drove Chicago's Jay Cutler to the ground.
San Francisco defensive end Justin Smith was fined $5,000 for hitting Brett Favre in the knee area during Minnesota's 27-24 win Sunday.
FORMED: The NFL Players Association has formed a committee to address the issue of head trauma among players.
The NFLPA's concussion and traumatic brain injury committee will address diagnosis, treatment and prevention of concussions and brain injuries in active players; and the long-term cumulative effects of isolated or repetitive traumatic brain injuries in NFL players as patients.