Vaccine Epidemiology, Part Four: Yes, Vaccines Work!

In this video, we talk about the evidence for vaccine efficacy and effectiveness. We know these values from experimental and observational epidemiological studies. It takes many years for a vaccine to go from idea to a product, and it takes a few more to understand its impact at the population level.

Author: René F. Najera, DrPH

I am the editor of the History of Vaccines site, an online project by the College of Physicians of Philadelphia. All opinions expressed on these blog posts are not necessarily those of the College or any of my employers. Check out my professional profile on LinkedIn: https://www.linkedin.com/in/renenajera Feel free to follow me on Twitter: @EpiRen