Скачать или смотреть Vaccines: How they work and why they're important

This video explains how vaccines function and gives some history of vaccination programs.

All images featured in this video are in the Public Domain.

Images from the CDC are in the Public Domain because the image is a work of the Centers for Disease Control and Prevention, part of the United States Department of Health and Human Services, taken or made as part of an employee's official duties. As a work of the U.S. federal government, the images are in the public domain.

The image of FDR is in the Public Domain because it was released by copyright-holder, the Franklin Delano Roosevelt Library
In case this is not legally possible: The right to use this work is granted to anyone for any purpose, without any conditions, unless such conditions are required by law.

The FDR Image taken from Wikimedia Commons.