A case of deliberate spread of HIV is currently being investigated in Ontario:
http://www.canada.com/toronto/story.asp?id=E700BD03-3998-4E74-B6EE-68CAD7AA8AE8
HIV carrier's contacts grow to 18
Assault charges pending
The number of women who say they have been unknowingly exposed to the HIV virus now stands at 18 after police began a search last week for the sexual partners of an infected Hamilton man.
Aggravated assault charges against Johnson Apangu Aziga, a researcher with Ontario's Ministry of the Attorney-General, have sparked the province-wide hunt for his former lovers.
Mr. Aziga's alleged exploits were first revealed when a former girlfriend contacted Hamilton Police upon learning of his infection.
"When we arrested him, we learned of a second victim," said Sergeant Maggie McKittrick, a spokeswoman for Hamilton Police. "From the media coverage in one day in the newspaper, we had an additional three people come forward. From there it's just snowballed."
Police say 18 women have contacted them since Mr. Aziga, 47, was initially charged on Aug. 29. Two came forward yesterday.
Mr. Aziga faces five charges of aggravated assault and five charges of aggravated sexual assault.
Detective Kelly Rees, one of the investigators, confirmed there could be even higher numbers.
"I hope it's not too much higher, to tell you the truth, because it's really sad," she said. "Some women have been shell-shocked, some have been, surprisingly, incredibly courageous. It's the most heart-wrenching thing that could happen to them, and they're being forthright and open with intimate details of their lives."
Mr. Aziga tested positive for HIV in 1996, three years before an acrimonious divorce.
Investigators are working to retrace his footsteps over the past seven years to see how far afield the virus may have travelled. So far, they have learned of alleged incidents in Hamilton, Toronto, Brantford and Sault Ste. Marie.