Yorkshire will be without four players for their remaining Vitality Blast group games as one of them tested positive for Covid-19 after they had contact outside a secure environment.
The club have confirmed that Matthew Fisher, Tom Kohler-Cadmore, Josh Poysden and David Willey have been advised to self-isolate for 14 days, but have not identified the member of the group with the positive result.
A statement on Yorkshire's official website said: "The Yorkshire County Cricket Club can confirm that Matthew Fisher, Tom Kohler-Cadmore, Josh Poysden and David Willey will be unavailable for the remaining Vitality Blast group matches after a positive COVID test was received.
"The four players were deemed to be in close contact on Saturday separate to the squad and away from a COVID secure environment.
"One player has had a positive test returned and as all four players were deemed to be in close contact, all four have been advised to self-isolate for 14 days, as per COVID guidelines."
The club's lead physiotherapist Kunwar Bansil described the quartet's absence as "disappointing" but said the safety of the remaining players, the opposition and the wider community were paramount.
He said: "Although it is disappointing that we will be without four key players, we have a duty of care to the wider squad and others.
"The health and wellbeing of the players and support staff is the club's primary responsibility, as well as protecting the opposition, the integrity of the competition and playing our part in keeping the wider community safe."
The Vikings currently sit in fourth place in the North Group with fixtures against Durham Lions, Lancashire Lightning and Derbyshire Falcons to come.
