Though there is "significant risk" of a resurgence of polio in 2013, a new report (.pdf) from the Independent Monitoring Board (IMB) of the Global Polio Eradication Initiative (GPEI) is optimistic about the eradication of the disease, noting that 99.9 percent of polio has been stopped worldwide, with 175 cases reported so far in 2012 compared with 350,000 reported in 1988, BBC News reports. Though the IMB's "target of stopping global polio transmission by the end of the year will clearly not be achieved," only four countries -- Afghanistan, Nigeria, Pakistan, and Chad – reported cases in 2012 and India was declared polio-free in January, marking a milestone taking it off the list of endemic countries, BBC notes.