Six test positive
The league said that 748 tests were carried out and that the positive tests were spread across three clubs.
The tests are being done as part of a process designed to allow matches to restart in June. Squads were allowed to return to training, carried out according to physical distancing, on Tuesday.
The league said in a statement: “The Premier League can today confirm that, on Sunday 17 May and Monday 18 May, 748 players and club staff were tested for Covid-19.
“Of these, six have tested positive from three clubs. Players or club staff who have tested positive will now self-isolate for a period of seven days.
“The Premier League is providing this aggregated information for the purposes of competition integrity and oversight.
“No specific details as to clubs or individuals will be provided by the Premier League due to legal and operational requirements.”
West Ham is not one of three clubs mentioned in the statement and no tests have come back positive for any Hammers players.
All West Ham players reported for training at Rush Green this morning with none refusing to train.