The 24th of October is World Polio Day. The day was established by Rotary International over a decade ago in celebration of the birth of Dr. Jonas Salk, the man who led the first team to develop a vaccine against polio. While tremendous progress has been made since 1988, pockets of wild poliovirus remain, especially in countries like Pakistan, Afghanistan and Nigeria leaving unvaccinated children at risk of lifelong, irreversible paralysis. Meanwhile, the Global Alliance for Vaccines and Immunization known as the GAVI Alliance says it is on track immunize a quarter of a billion children by 2015. GAVI issued a report in Geneva earlier this month on its four-year programme to save children's lives through vaccinations. It will be formally presented at a meeting of GAVI donors and partners in Stockholm on 30 October.