Bureau of HIV/AIDS, STD and TB
http://www.hc-sc.gc.ca/hppb/hiv_aids/can_strat/research/index.html

Especially look at the following sections:

http://www.hc-sc.gc.ca/hpb/lcdc/bah/epi/epi_e.html#HIV

http://www.hc-sc.gc.ca/hpb/lcdc/publicat/aids/

Other sources of interest include:

The Economic Burden of HIV/AIDS in Canada
Canadian Policy Research Network (1998)

See press release: http://www.cprn.com/Release/Press/prebh_e.htm
Download full PDF document here: http://www.cprn.com/en/doc.cfm?doc=140#

HIV/AIDS and Canadian Drug Treatments
IMS Health (2001)

See press release: http://www.imshealthcanada.com/htmen/3_1_29.htm

AIDS Death Rate by local area in Canada
Statistics Canada (1996) http://www.statcan.ca/english/freepub/82-221-XIE/tables/htmltables/c1t23.htm