References

Center for Disease Control and Prevention. (2014). Vaccines and immunizations. Retrieved from: http://www.cdc.gov/vaccines/

Ciolli, A. (2008). Mandatory school vaccinations: the role of tort law. Yale Journal of Biology and Medicine, 129-137.

Global immunization data. (2014). Retrieved from World Health Organization Website: http://www.who.int/immunization/monitoring_surveillance/Global_Immunization_Data.pdf?ua=1

Immunizations policy issues overview. (2011). Retrieved from National Conference of State Legislatures website: http://www.ncsl.org/research/health/immunizations-policy-issues-overview.aspx

Tortora, G., Funke, B., & Case, C. (2013). Microbiology an introduction (11th 
     ed.). Pearson Education.