Hull have announced they are the Championship club that has two members of personnel with confirmed cases of coronavirus.
A total of 1,014 players and staff from all 24 Championship clubs were tested over the past 72 hours, and the results reflect an almost identical ratio to those reported in the Premier League's second wave of testing.
It was announced that the two people were from the same club and Hull have now revealed that is them.
"Medical confidentiality means the names will not be disclosed, and the club asks for this to be respected," a statement read.
"The duo, who are both asymptomatic and feeling no ill effects, will now self-isolate for seven days - in line with the protocols set out in EFL guidelines - before being tested again at a later date.
"The club will continue to liaise closely with the affected personnel and will make no further comment."
The EFL had earlier released the results of the tests as the Championship looks to resume the season.
In a statement the EFL said: "The EFL can confirm that 1014 players and Club staff from all 24 Championship clubs have been tested for Covid-19 over the course of the last 72 hours, with two individuals testing positive from one club.
"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.
"The EFL will continue to make regular and relevant announcements as appropriate in respect of the testing programme to support competition integrity and transparency.
"No specific details as to clubs or individuals will be provided by the League."
The results will encourage those who wish to see a resumption of the Championship season next month, with talks ongoing between officials in both the second tier and League One.
Meanwhile, former FA chief executive Mark Palios has warned EFL clubs the financial impact of the coronavirus pandemic could be even greater than the £200 million blow first feared.
EFL chairman Rick Parry estimated the cost of the shutdown earlier this month but Palios, also chairman of League One Tranmere, believes the sum will continue to grow.
Palios warned: "Whilst you may look at the 'hole' which has been articulated as £200 million to September - I think it's bigger than that. There is a real financial maelstrom coming towards the league at this point in time.
"I personally believe we haven't seen the worst of it yet, and, during the course of the summer, you'll see a lot more financial stress on the clubs as we move onwards and continue to pay wages.
"I think what you'll see is a lot of clubs will stumble down the road to insolvency. You might see people getting high court orders against them.
"They'll bumble on for a period of time."