References

Boyd, R. (2016). It takes a herd. Retrieved from: https://www.aap.org/en-us/aap-voices/Pages/It-Takes-a-Herd.aspx

Government of Canada. (2017). Page 8: Canadian immunization guide: Part 1 – key information. Retrieved from https://www.canada.ca/en/public-health/services/publications/healthy-living/canadian-immunization-guide-part-1-key-immunization-information/page-8-vaccine-administration-practices.html

Khan Academy. (n.d.). Adaptive immunity. Retrieved from: https://www.khanacademy.org/test-prep/mcat/organ-systems/the-immune-system/a/adaptive-immunity

Khan Academy. (n.d). Immune system. MCAT: Organ systems. Retrieved from: https://www.khanacademy.org/test-prep/mcat/organ-systems#concept-intro. Note: All Khan Academy content is available for free at www.khanacademy.org

Khan Academy. (n.d.). The immune system review. Retrieved from: https://www.khanacademy.org/science/high-school-biology/hs-human-body-systems/hs-the-immune-system/a/hs-the-immune-system-review

Vaccines.gov. (2018). Vaccines by disease. Retrieved from https://www.vaccines.gov/diseases

World Health Organization (n.d.). Immunization. Retrieved from: https://www.who.int/topics/immunization/en/