Rochdale and Doncaster have become the seventh and eight sides to have a game called off in League One after a positive coronavirus test.
Bristol Rovers, Sunderland, Peterborough, Ipswich, Portsmouth and Hull City have also had to postpone some of their festive fixtures.
There have been increasing calls for a circuit break to be introduced in the division to stop the spread of the virus.
However, the EFL have confirmed there are no plans for a circuit break in the league, prior to Rochdale and Donny's postponements.
An EFL spokesperson said: "The Club informed the EFL that they would be unable to fulfil the fixture following a recent positive COVID-19 test and the requirement for players and staff to self-isolate as per EFL and Government guidance in order to mitigate against the risk of further infection.
"The circumstances surrounding the postponement will now be the subject of an investigation in accordance with EFL Regulations.
"A revised date for the rearranged fixture will be confirmed in due course."
