New York Giants tight end Daniel Fells remained hospitalized Sunday with a high fever more than a week after he was admitted to combat a MRSA infection, a source told Newsday.

Doctors continued to work toward eliminating the bacteria, which is resistant to many antibiotics and can be life-threatening in some situations.

The NFL Network reported Sunday that Fells already had five surgeries on his foot to stave off the infection, with more coming. If doctors are unable to stop the spread of the bacteria, they might have to amputate his foot as a life-saving maneuver.

Fells, 32, was placed on injured reserve last week. He was being treated for ankle and toe injuries when he exhibited a high fever and was brought to the hospital by his wife. He has remained there since.

Giants coach Tom Coughlin had said the hope was that Fells would be released Thursday, but he was not.

Fells, who has 111 career NFL receptions and 11 touchdowns over a career that began in 2006, posted a message on Instagram on Sunday night. "My heart is with my brothers tonight," he wrote. "Get that W G-men. I love every one of you #thiswillnotdefeatme."

MRSA, or methicillin-resistant staphylococcus aureus, is a dangerous and contagious bacteria. The Giants spent time last week scrubbing and disinfecting their facility under protocols put in place by the NFL and the NFLPA in accordance with the Duke Infection Control Outreach Network. They also briefed players on how to protect themselves from MRSA. No other Giants players have shown signs of MRSA.