According to coach Brad Childress, the wide receiver was feeling ill Thursday and vomited on a flight from Florida to Atlanta. Instead of continuing to the Twin Cities to take part in the team's rookie minicamp this weekend, Harvin was taken to a hospital.

Swine flu was ruled out, but high alert for the virus had paramedics hustling to treat him once the plane landed. After a rigorous travel schedule around the country in the weeks leading up to the NFL draft and a hard workout on Wednesday, Harvin began to feel sick.

"I just think the grind had caught up with him," Childress said, adding: "It's an unfortunate circumstance, but it is what it is."

Doctors weren't satisfied enough with Harvin's condition Friday to release him yet, so he was expected to remain in the hospital for another day or two. Harvin was picked by the Vikings in the first round with the 22nd overall selection last weekend.