Newcastle United must wait to see the outcome of Newport's Covid-19 tests before setting off for Wales.
The Magpies are due to face County - with their local area in a state of strict lockdown restrictions - on Wednesday at 530pm.
Newport boss Michael Flynn said: “The testing has been covered by the Premier League.
“We’ve all been tested and the results will be back this morning.
“We’ve followed all the protocols and the procedures. It’s a credit to our doc and physio who have been very vigilant in what we need to do.
“It’s a compliment to the players that they’ve got on with it and adjusted, and not made any fuss about it.
“You’re not going to stop everything but if we’re doing the right procedures and right protocols that will hopefully limit the amount of people who could get infected.”
Looking ahead to the prospect of facing Newcastle, Flynn said: “Let’s not dress it up, it’s going to be a very tough challenge.
“You saw what Newcastle did to Morecambe last week (won 7-0) who are in our league.
“I’ve got huge respect for Steve Bruce and they are taking the competition seriously.
“Newcastle have got a stronger squad this season and they’ll be looking at this as a chance to get to a final and win some silverware.
“You’d rather play against the best team they’ve got as you’d like to get a result against their first team.
“I’m just glad it’s at home because it gives us that little bit of advantage in terms of used to our surroundings.”
