The Red Sox have felt the absence of Shane Victorino early, and the team remains uncertain about when it will get its everyday right fielder back.

Victorino, who suffered a hamstring injury in the final game of spring training that resulted in his placement on the disabled list, was further slowed in his efforts to rehab by a nasty bout of the flu last week. Illness forced him to miss the visit to the White House and continued to afflict him into the weekend.

The reigning AL Gold Glover is finally improving to the point where he’s been able to commence exercise, but there’s a good chance that he’ll still be resuming the earliest stages of his return to baseball activities at the end of the coming week. That being the case, his return to the active roster appears likely to have been slowed by his illness.

“He was in earlier today for treatment, so the flu symptoms, those are slowing. … He’s started to do some cardio work, so we’re starting to get some physical activity back in the mix, but that’€™s been delayed because of how he’s felt from the flu,” said manager John Farrell. “We’re still trying to keep him away from everyone else for obvious reasons, but as we get through this week or toward the end of this week and not just the treatment but also the activity starts to ramp up, we’ll get a better read on a projected time for a rehab assignment.”