Wikimedia Commons, https://commons.wikimedia.org/wiki/File:Polio_vaccine_poster.jpg , accessed April 5, 2021. "This 1963 poster featured CDC’s national symbol of public health, the "Wellbee", who was depicted here encouraging the public to receive an oral polio vaccine....CDC used the Wellbee in its comprehensive marketing campaign that used newspapers, posters, leaflets, radio and television, as well as personal appearances at public health events. Wellbee’s first assignment was to sponsor Sabin Type-II oral polio vaccine campaigns across the United States."
"Poliomyelitis (polio) is a highly infectious viral disease that largely affects children under 5 years of age. The virus is transmitted by person-to-person spread mainly through the faecal-oral route or, less frequently, by a common vehicle (e.g. contaminated water or food) and multiplies in the intestine, from where it can invade the nervous system and cause paralysis.....In 1988, the World Health Assembly adopted a resolution for the worldwide eradication of polio, marking the launch of the Global Polio Eradication Initiative, spearheaded by national governments, WHO, Rotary International, the US Centers for Disease Control and Prevention (CDC), UNICEF, and later joined by the Bill & Melinda Gates Foundation and Gavi, the Vaccine Alliance. Wild poliovirus cases have decreased by over 99% since 1988, from an estimated 350 000 cases in more than 125 endemic countries then to 175reported cases in 2019. ....Of the 3 strains of wild poliovirus (type 1, type 2 and type 3), wild poliovirus type 2 was eradicated in 1999 and no case of wild poliovirus type 3 has been found since the last reported case in Nigeria in November 2012. Both strains have officially been certified as globally eradicated. As at 2020, wild poliovirus type 1 affects two countries: Pakistan and Afghanistan"
---World Health Organization, https://www.who.int/health-topics/poliomyelitis#tab=tab_1, (accessed April 5, 2021)