Vaccines and Immunizations: Basics and Common Questions, Center for Disease Control

This page from the CDC presents general information for the public about vaccines.

Vaccination greatly reduces disease, disability, death and inequity worldwide, World Health Organization

This page from the WHO discusses the importance of vaccinations.

The History of Vaccines, College of Physicians of Philadelphia

The History of Vaccines site provides information about the history of vaccines, how they were developed and how they protect against infectious disease. Included also are articles on, various topics and educational activities related to vaccines.

What is Herd Immunity?, Nova

This resource from Nova describes community (herd) immunity, threshold percentages of the population that need to be immunized for various contagious diseases, and why herd immunity is important.

The History of Vaccines, College of Physicians of Philadelphia

The History of Vaccines website provides information about the history of vaccines, how they were developed and how they protect against infectious disease. Included also are articles on, various topics and educational activities related to vaccines.

Ethical Issues Concerning Vaccination Requirements, Public Health Reviews, Vol. 34 No 1

This article addresses the ethical questions related to vaccinations involving the balance of personal autonomy and choice vs. the social obligation to protect at risk individuals in a population.

Ethical Issues and Vaccines, College of Physicians of Philadelphia

This page from the History of Vaccines website outlines the key ethical issues related to vaccine regulation and requirements, research and testing, informed consent, and access disparities.

The Vaccine War: The Growing Debate Over Vaccine Safety, WGBH

In this video chapter from Frontline’s The Vaccine War, public health officials, doctors and parents discuss vaccine safety and present differing perspectives on the benefits and risks of vaccination.