The 24-year-old is the first active player in the NFL to publicly acknowledge that he tested positive for the virus.
Allen was spending his offseason at the Rams’ training facility to undergo rehabilitation treatment on a knee injury when he began to feel symptoms three weeks ago.
The Rams’ training facility was closed for two weeks and cleaned thoroughly. Players who must undergo rehabilitation returned this week.
Allen told Fox Sports that he lost his sense of smell and taste and had a sore throat, fatigue and headaches. He is expected to be cleared of the virus this week.
** Although no active NFL players previously said they tested positive, New Orleans Saints coach Sean Payton and one unidentified member of the Los Angeles Chargers organization tested positive, and two others on the Chargers have shown symptoms.