One great source of information is CDC Atlanta. http://www.cdc.gov/cdctext.htm I have listed a couple of references from there that may be of help. If you do a search of their web site you may find others of interest. http://www.cdc.gov/niosh/nrinfc.html http://www.cdc.gov/ncidod/hip/Occhealt/ocblood.htm Health Canada also has info on their web page- http://info.hc-sc.gc.ca/ A search there should find info you want. A couple of their references are below. Health Canada - Infected Health Care Workers - CCDR Vol. 24S4 Definitions, References, Dissenting Reports http://www.hc-sc.gc.ca/main/lcdc/web/publicat/ccdr/98vol24/24s4/24s4b_e.html (Size 38K, Last modified Aug-05-98 13:26) Health Canada - Health Care Workers Exposed to Bloodborne Pathogens http://www.hc-sc.gc.ca/main/lcdc/web/publicat/pathogns/hcw_k_e.html (Size 7K, Last modified Aug-05-98 13:30) Joyce Fox [log in to unmask]