Centers for Disease Control and Prevention data regarding varicella (chickenpox) virus incidence and mortality rates.
Statistics on U.S. smoking rates and tobacco taxation rates for all fifty states.
Source: "Near elimination of varicella deaths in the US after implementation of the vaccination program." published in the American Journal of Pediatrics in August 2011.
Source: Centers for Disease Control and Prevention in Atlanta, Georgia. “Varicella Mortality: Trends before Vaccine Licensure in the United States, 1970–1994” published August 2000 in the Journal of Infectious Diseases.
Source: "Impact of Vaccination on the Epidemiology of Varicella: 1995–2009" published in the journal Pediatrics in August 2011.
Source: The Campaign for Tobacco-Free Kids, April 2016: https://www.tobaccofreekids.org/research/factsheets/pdf/0097.pdf
Source: Centers for Disease Control and Prevention, 2015