Two Fulham players are among three positive tests following the EFL's latest round of testing.
A third positive test is from a separate club. The EFL says 1,030 players and club staff have been tested over the course of Monday 25, Tuesday 26 and Wednesday 27 May.
Two individuals from Hull tested positive following the first round of coronavirus testing in the Championship, but the club say none of its players or staff are included in the three new positive tests.
Those players or club staff who have tested positive will now self-isolate in line with the guidelines provided by the EFL and only those who have tested negative will be permitted to enter training ground facilities.