Allardyce is to undergo an operation on a coronary artery next week and will be missing Blackburn’s coming games.
Dunn scored the first while and own goal by Sam Rickett secured the win for Blackburn.
“We all wish him the best with his operation. Maybe he should stay away a little bit more,” Dunn joked.
“I had a good couple of seasons a few years ago and hopefully I can get into double figures this season,” said midfielder Dunn.
“We had a tough October. So many hard games in that month. We have 10 games now where we feel we can really push on and it is going to really make or break us.”
Blackburn captain Ryan Nelsen added of Allardyce’s situation: “It was a major shock to us, especially when we knew it was the heart.
“He’s a big man so he must need a big ticker to keep him going. But it will take a lot to knock over that old elephant.”