Jackson (undisclosed) was placed on the reserve/COVID-19 list Saturday, Jim Wyatt of the Titans' official site reports.
The move means Jackson either tested positive himself or is a high-risk close contact of an infected individual. Regardless, the 22-year-old will be sidelined until he clears the league's virus-related protocols.
Jackson (hamstring) was listed as a full participant on Wednesday's practice estimate, Jim Wyatt of the Titans' official site reports.
The Titans didn't practice Wednesday due to COVID-19 concerns, but once team activities resume, expect Jackson to participate without limitations. The rookie seventh-rounder played at least 50 percent of snaps in Weeks 1 and 2 before sitting out Week 3 due to a hamstring injury. His gameday role likely will depend on whether Adoree' Jackson (knee) returns from IR.
Jackson (hamstring) has been ruled out for Sunday's game versus the Vikings, Terry McCormick of TitanInsider.com reports.
Jackson has played at least 50 percent of the defensive snaps in each of the first two games with Adoree' Jackson (knee) on IR, so now the Titans secondary will be further shorthanded. Chris Milton or Tye Smith could rotate into Jackson's place, but Malcolm Butler, Johnathan Joseph and Kristian Fulton will handle the bulk of the workload.
The Titans selected Jackson in the seventh round of the 2020 NFL Draft, 243rd overall.
Jackson was on the Thorpe Award Watch List entering his senior year at Marshall. He was a four-year contributor for the Thundering Herd and profiles as a special teamer and reserve defensive back for the Titans.