What is Vaccines: Overview, Benefits, and Expected Results
...maintaining public health. References: Plotkin SA, Orenstein WA, Offit PA, eds. Vaccines. Philadelphia: Saunders; 2008. National Health Service (2014). “How Vaccines Work.” Available: http://www.nhs.uk/conditions/vaccinations/pages/how-vaccines-work.aspx U.S. Dept. of Health and Human...