Here is a good article from a few years ago by Jason La Canfora when he was writing for the Washington Post
Casolaro said that whenever there are any bodily secretions involved with an injury, "it is presumed to be contagious," by the doctors and athletic trainers, who also use an antibacterial rinse to treat abrasions.
"We culture every abrasion," to know how to treat it and "to know if it's MRSA or not MRSA."
He said the team has a physician on site every day during training camp, and four days a week during the season, and all keep an eye on any infection issues. He said the team's training staff also uses a special anti-bacterial soap found in hospitals.
The CDC's recommendations to the public for preventing staph infections apply to pro athletes as well: frequent hand-washing, keeping cuts and scrapes covered with a bandage, avoiding contact with other people's wounds and avoiding sharing personal items like towels and razors. And health experts have long warned that over consumption of antibiotics can lead to the development of resistant strains of infection.