New epidemics such as avian flu and Severe Acute Respiratory System have captured media attention in recent years, but more familiar infectious diseases continue to persevere and, in some cases, resurge. Take the case of polio, targeted for eradication by the largest public health initiative in history. When the campaign began in 1988, more than a thousand children a day were infected by the disease. By 2003 the case count had dropped to fewer than 800 a year. But the incidence of polio has been slowly increasing, with over 1,000 cases reported so far this year. More than 200 cases have been reported in India, up from sixty-six last year, and there are concerns the disease may go global after the Indian strain showed up in Nepal, Bangladesh, Angola, Namibia, and Congo (IHT).