Links to websites
Centers for Disease Control and Prevention National Immunization Program http://www.cdc.gov/nip/events/polio-vacc-50th/ March of Dimes http://www.marchofdimes.com/polio/index2.asp Rotary International http://www.rotary.org/foundation/polioplus/index.html Sabin Vaccine Institute http://www.sabin.org/ Salk Institute for Biological Studies http://www.salk.edu/ Smithsonian’s National Museum of American History http://www.americanhistory.si.edu University of Michigan http://www.polio.umich.edu http://www.umich.edu University of Pittsburgh http://www.polio.pitt.edu/index.htm UNICEF http://www.unicef.org/ World Health Organization http://www.who.int/en/