Horizon Health and the New Brunswick Heart Centre are notifying open heart surgery patients about a potential, but very low infection risk. A device used to heat and cool blood during those surgeries, of which the centre has three, has been linked to a rare bacterial infection. Preliminary tests were positive, but after being worked on they’ve been negative. People who underwent the procedure between November 2012 and November 2016 have a less than one in 1000 infection risk.