Table of Contents

Published: January 7, 2026

Read Time: 0.1 Mins

Total Views: 101

Share This
« Back to Glossary Index

When a vaccinated individual does not develop immunity; can be primary (never developed) or secondary (waning immunity).

« Back to Glossary Index

About the Author: Dr. Jay Varma

Dr. Jay Varma is a physician and public health expert with extensive experience in infectious diseases, outbreak response, and health policy.