Luke Chambers finally gave Ipswich something to celebrate with a 15th-minute diving header before Freddie Sears ended his own barren run with a goal two minutes before the finish - ending his 38-game barren run.
McCarthy paid special tribute to Sears and also Burton who gave Ipswich a massive scare in the first half.
The Town boss said: "Whether we have played him on the right, the left or in the centre, Freddie has been selfless and never questioned it.
"His pace and energy means he is a constant threat and I have never once considered leaving him out.
"It was great to see everyone celebrating with him (including keeper Bartosz Bialkowski) and I think because it was Freddie, it was that extra bit special."
And of Burton, who were hugely unfortunate to go in behind at the break, McCarthy added: "I think they are a very capable team in a system that is difficult to play against.
"It has not been a nice couple of weeks so it was good to win 2-0 and get another clean sheet."
Another shout-out for the Blues, their fifth in seven matches, looked unlikely in the first half, despite Ipswich taking the lead when an unmarked Chambers stooped to head home Sears' cross.
It was then all about missed chances for Burton with Lucas Akins and Lloyd Dyer the chief offenders, failing to take advantage of gilt-edged chances before John Brayford was denied by the feet of Bialkowski.
The visitors were unable to maintain the same threat after the break and it was Ipswich who should have doubled their lead before finally making the game safe at the end when some silky footwork by man of the match Tom Lawrence teed up Sears to finally grab his goal.