In the 1970s and 80s, he was a gay activist and an early commentator on (then) controversial topics such as AIDS and promiscuity and attitudes to homosexuality in organized religion.

[3] Much of the research explores opportunistic fungal pathogens—those that grow on (and at the expense of) humans and animals—and the unique ways in which these organisms exploit their environments.

[4][5][6] They also include waterfront vacation properties on streams, lakes or rivers that infect otherwise healthy visitors with the often deadly disease blastomycosis.

[11] Since 2008, he has been a faculty member of the University of Toronto Dalla Lana School of Public Health[12] and research director of Sporometrics, a Toronto-based microbiological testing company.

[34] As a gay activist, he was an early commentator on (then) controversial topics such as AIDS and promiscuity,[35] and attitudes to homosexuality in Christianity, Judaism and Islam.