1. Foodborne illness acquired in the United States—unspecified agents.;Scallan;Emerg Infect Dis,2011
2. CDC. National Outbreak Reporting System (NORS) guidance for reporting all enteric foodborne, person-to-person, environmental, animal contact, and unknown/indeterminate mode of transmission outbreaks and for the general sections for reporting waterborne outbreaks 2014. Atlanta, GA: US Department of Health and Human Services; CDC; 2014. Available at http://www.cdc.gov/nors/pdf/NORS-Guidance_FINAL508c.pdf.
3. CDC. Guide to confirming a diagnosis in foodborne disease; 2006. Atlanta, GA: US Department of Health and Human Services; CDC; 2006. Available at http://www.cdc.gov/foodsafety/outbreaks/investigating-outbreaks/confirming_diagnosis.html.
4. US Census Bureau. National, state, and Puerto Rico commonwealth totals datasets: population, population change, and estimated components of population change: April 1, 2010 to July 1, 2014. Washington, DC: US Census Bureau; 2014. Available at https://www.census.gov/popest/data/national/totals/2014/NST-EST2014-alldata.html.
5. US Census Bureau. State intercensal estimates (2000–2010). Washington, DC; US Census Bureau; 2015. Available at https://www.census.gov/popest/data/intercensal/state/state2010.html.