About 300 students from the University of Prince Edward Island have been issued warnings that they may have been exposed to HIV, hepatitis B or C.
Students that used blood glucose testing equipment during biology classes have been sent warnings by UPEI officials that they may have been exposed to the diseases. CBC reported UPEI dean of science Christian Lacroix said "the risk is assessed as being extremely low."
Students shared spring-loaded equipment, and whilst the needles were changed between students, the receptacles used were not. Lacroix said "Occasionally there can be flashback of some blood when they test the person's blood and it can get in the device itself. So though the needle is changed there may be some blood left behind in the cap of the device."
According to the Calgary Sun a lab assistant became aware of the risks after students at Winnipeg's Southeast Collegiate used a similar device in school classes and were then called in for HIV and hepatitis testing.
UPEI says around half of the students involved have thus far been tested and school officials are attempting to contact the remainder of the exposed students.