1. Tetanus Surveillance --- United States, 2001--2008. Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6012a1.htm. 2011. Accessed August 1, 2018.
2. Manual for the Surveillance of Vaccine-Preventable Diseases. Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/vaccines/pubs/surv-manual/chpt16-tetanus.html. 2017. Accessed August 3, 2018.
3. Tetanus. Manual for the Surveillance of Vaccine-Preventable Diseases. Centers for Disease Control and Prevention website. Available at: https://www.cdc.gov/tetanus/clinicians.html#symptoms. 2018. Accessed November 30, 2018.
4. Nickson, C. Tetanus. Life in the Fast Lane - Medical Blog. Available at: https://lifeinthefastlane.com/ccc/tetanus/. 2014. Accessed November 30, 2018.
5. Tetanus -- Rutland County, Vermont, 1992. MMWR. Centers for Disease Control and Prevention website. Available at: https://www.cdc.gov/mmwr/preview/mmwrhtml/00017686.htm. 1992. Accessed September 1, 2018.