Saturday's Sky Bet League One fixture away at Accrington Stanley has been suspended.
The decision follows the recent positive COVID-19 tests and the requirement for players and staff to self-isolate for between 10-14 days as per EFL and Government guidance in order to mitigate against the risk of further infection.
Accrington's next fixture against Hull City a week today, has also been suspended.
The circumstances surrounding the postponements will now be the subject of investigation in accordance with EFL Regulations.
Revised dates for the rearranged fixtures will be confirmed in due course.