While Jared Abbrederis' status remains uncertain because of a knee injury, the prognosis for another Green Bay Packers rookie receiver became more clear on Friday.

Seventh-round pick Jeff Janis said he's missed the first week of practice due to shingles, a viral infection that causes a painful rash. Once you've had chicken pox, the Mayo Clinic says the infection can occur if the virus reactivates from its inactive state in the nerve tissue near your spinal cord and brain.

The 6-foot-2 receiver out of Saginaw Valley State took part in all of the offseason program, but was placed on the non-football illness list last week after failing his pre-camp physical. However, Janis says he expects to be cleared Monday.

"It's pretty bad timing," he said.

Packers coach Mike McCarthy didn't have an update on either Abbrederis or rookie center Corey Linsley, who sat out of Friday's practice with a shoulder injury.

They received some good news on safety Morgan Burnett, who missed one day of practice because of the ankle injury that forced him to drop out of practice Wednesday.

Friday's injury report

New injuries: WR Jared Abbrederis (knee), C Corey Linsley (shoulder).

Still out: WR Jeff Janis (illness), DL Letroy Guion (hamstring), DL Jerel Worthy (back surgery), S Tanner Miller (ankle).

Returned: S Morgan Burnett (ankle)

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