It states: "If a club has at least six players unable to participate as the result of confirmed or suspected cases of swine flu, it can receive roster exemptions for those players and promote players from its own practice squad to replace them. A club can receive a max of 8 such exemptions. They must be medically confirmed cases of swine flu. This procedure does not apply to any other type of flu or illness. There is a deadline for promoting practice squad players pursuant to these procedures at four hours prior to kickoff."

http://nationalpost.stats.com/fb/story.asp...223734930000201