Fully vaccinated players and tiered staff will be subject to "strategic, targeted spot testing as directed by the NFL Chief Medical Officer [Dr. Allen Sills].
"Such testing will include, without limitation, sample selection based on position group and staff cohorts. The NFL CMO will notify each club ICO as to which individuals will be required to test each week. If COVID infections are identified, the NFL and NFLPA medical experts will determine additional mitigation efforts, which may include, additional testing," the memo states