National Vaccine
Information Center

Your Health. Your Family. Your Choice.

The MedAlerts Blog
Analysis of Trends in VAERS Data
Blog Home
About the MedAlerts Blog
MedAlerts Home
  2014 Entries     2013 Entries     2012 Entries     2011 Entries     2010 Entries     2009 Entries

About the MedAlerts VAERS Blog

VAERS is the Vaccine Adverse Event Reporting System, a U.S. Government program co-sponsored by the Centers for Disease Control (CDC) and the Food and Drug Administration (FDA). VAERS is a post-marketing safety surveillance program, collecting information about vaccine reactions (adverse events) that occur after the administration of vaccines licensed for use in the United States. Because it is post-marketing and voluntary, there are limitations to its usefulness.

I have been following the VAERS data since 2003, downloading the published government data and posting it at so that anyone can examine the data for themselves. For a few years, I examined the data more closely, making observations, describing trends, and writing this blog. The reader should know this very important fact about my blog:

I am not a medical professional.

Rather, I am a computer scientist with fifty years of experience. So where I am well qualified to deal with data, I do not claim to be an expert on the medicine behind the numbers.

Each blog entry describes data that was current at that time it was written, but since VAERS data is always subject to change, the actual results in an entry may not be reproducible unless you use the Wayback Machine to search the older data.

-- Steven M. Rubin, Ph.D.

Copyright © 2024 National Vaccine Information Center. All rights reserved.
21525 Ridgetop Circle, Suite 100, Sterling, VA 20166