OWINGS MILLS, Md. -- The Baltimore Ravens on Saturday said they were informed by the NFL that "at least four unique strains" of COVID-19 were found inside their facility during the team's outbreak.
"Three of the four were stopped and not spread within our organization," Ravens president Dick Cass said in a statement. "Unfortunately, the fourth was a highly-contagious strain and spread throughout our organization."
The outbreak in Baltimore was one of the biggest in professional sports.
At least one Ravens player tested positive for 10 straight days as Baltimore placed 23 players on the reserve/COVID-19 list during that span.