Miami Dolphins defensive backs Sean Smith and Jason Allen were scratched from Saturday night's exhibition game after coming down with flulike symptoms, and teammates expressed concern that swine flu was a possibility.
"We've all been warned to be careful and make sure you wash your hands and don't put your hands on your face," linebacker Akin Ayodele said after the Dolphins beat Carolina 27-17.
Smith and Allen underwent tests and remained at the team hotel during the game. Afterward, the Dolphins said they did not yet have the test results.
"Nothing is confirmed," coach Tony Sparano said.
Dolphins team spokesman Harvey Green told ESPN's Chris Mortensen that the test results would not be released publicly.
Smith's agent, David Canter, said his client was already feeling better and planning to take part in the team's next practice Monday.
"I was with Sean no more than two hours ago," Canter said. "He seems better, and he's good to go."
Smith was replaced at starting cornerback by fellow rookie Vontae Davis. Allen is a reserve safety.
Quarterback Chad Pennington said swine flu was never mentioned when players were told that Smith and Allen were ill. But running back Ronnie Brown said players considered the virus -- also known as H1N1 -- a possibility.
"You see it on TV," Brown said. "To actually have it be close -- you read so much about it, but to have it affect you a little, that's kind of scary. We have to make sure to wash our hands, stay clean, be careful and do the right things."
ESPN senior NFL analyst Chris Mortensen and The Associated Press was used in this report.