WINNIPEG - Work done by a researcher from the University of Manitoba is among the top 10 medical breakthroughs of the year, according to Time magazine.

Dr. Stephen Moses was among the principal investigtors in a trial that found male circumcision can reduce the risk of HIV infection in men who have heterosexual sex.

Moses, along with researchers from universities in the U.S. and Nairobi, conducted clinical trials on men in Kenya and Uganda.

They found circumcised men were roughly 50 per cent less likely than uncircumcised men to acquire HIV during sex with women.

Moses, who is now working in India, says he's honoured by the recognition.

Time magazine picked the HIV study as the second-biggest medical breakthrough of 2007, behind a new human vaccine against avian flu.