On Tuesday, the Premier League confirmed that there were six positive Covid-19 results returned from a total of 748 tests for players and club staff on Sunday and Monday.
The league confirmed that the positive tests came from three different clubs, with one of the positive tests revealed to be Burnley assistant manager Ian Woan.
On Tuesday night, Watford confirmed that one player and two staff members have tested positive and will begin a period of self isolation.
“Watford Football Club confirms that three people have tested positive for the Covid-19 virus following testing at the trainingg ground over the past 48 hours,” the club said in a statement.
“Of those three positive tests, one is a player and two are members of staff.
All three have asked that medical confidentiality be respected, therefore the club will not be revealing their names.
“All three will now self-isolate for seven days in line with the protocols set out in Premier League guidelines before being tested again at a later date.
“Strict adherence to the Premier League guidelines has ensured the training ground remains virus-free and a safe environment for the players to continue to work.
The club will continue to liaise closely with the affected personnel and there will be no further comment.”
The Premier League has been suspended since March as a result of the coronavirus outbreak.
Watford captain Troy Deeney insisted he was not prepared to risk becoming infected at training and then spread it to his family.