Huddersfield's only victory in their last 11 games against Bournemouth was by 5-1 in the Championship in August 2013.
Mooy suffered a deep cut to his left knee after a collision with Bournemouth's Lewis Cook.
Rajiv van La Parra rounded off a convincing win for Town by converting a stoppage-time penalty. We said before the game that this is massive for us and that after Old Trafford we had the hard fixtures behind us.
Steve Mounie scored twice as Huddersfield lifted themselves - at least temporarily - out of the relegation zone.
Mooy, 27, has been the Terriers top performer this season as they battle to stay up.
Mooy couldn’t continue
Beninese striker Mounie's shot was deflected in by Steve Cook after 66 minutes - Cook being attributed with an own goal.
"We needed a few minutes at the start where Bournemouth were strong but after that we played superb football".
"We have to see what he looks like in the upcoming days - how long he will be sidelined".
Just moments after the camera panned to Huddersfield manager David Wagner on the substitutes bench, an unknown player proceeded to pull down his shorts and reveal his manhood to the millions watching at home. "It was a fantastic afternoon for us".
Mounie did brilliantly on left flank, powering past Simon Francis and cutting a pass back to Pritchard, who steered home for his first Premier League goal since joining from Norwich City in January.
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