When Elizabeth Pisani began her career as an HIV epidemiologist, fewer than 1,5-million cases of HIV/Aids had been reported across the world. Within a year, by the end of 1997, 30-million people were estimated to be infected with HIV. As Pisani wrote in her first report for World Aids Day, that meant one in every 100 sexually active adults aged between 15 and 49 worldwide.
Eric Allen Patton stabbed his victim to death with a set of knives, a barbecue fork and a pair of kitchen scissors. She was Charlene Kauer, a white, middle-aged businesswoman from Oklahoma City who had once hired him as a handyman. He was a black labourer in his 30s, with a long record for violent burglary.