Patient Information: What Is Herd Immunity? | Infectious Diseases | JN Learning | AMA Ed Hub [Skip to Content]
[Skip to Content Landing]

What Is Herd Immunity?

Educational Objective
To identify the key insights or developments described in this article
1 Credit CME

Herd immunity occurs when a significant portion of a population becomes immune to an infectious disease, limiting further disease spread.

Disease spread occurs when some proportion of a population is susceptible to the disease. Herd immunity occurs when a significant portion of a population becomes immune to an infectious disease and the risk of spread from person to person decreases; those who are not immune are indirectly protected because ongoing disease spread is very small.

Sign in to take quiz and track your certificates

Buy This Activity

JN Learning™ is the home for CME and MOC from the JAMA Network. Search by specialty or US state and earn AMA PRA Category 1 CME Credit™ from articles, audio, Clinical Challenges and more. Learn more about CME/MOC

Article Information

Published Online: October 19, 2020. doi:10.1001/jama.2020.20895

Conflict of Interest Disclosures: Dr Desai reported receipt of a PandemicTech fellowship. No other disclosures were reported.

Sources: Plans-Rubió P. Evaluation of the establishment of herd immunity in the population by means of serological surveys and vaccination coverage. Hum Vaccin Immunother. 2012;8(2):184-188. doi:10.4161/hv.18444

Association for Professionals in Infection Control and Epidemiology. https://apic.org/monthly_alerts/herd-immunity/

Johns Hopkins Bloomberg School of Public Health. https://www.jhsph.edu/covid-19/articles/achieving-herd-immunity-with-covid19.html

If you are not a JN Learning subscriber, you can either:
Subscribe to JN Learning for one year
Buy this activity
jn-learning_Modal_LoginSubscribe_Purchase
Close
If you are not a JN Learning subscriber, you can either:
Subscribe to JN Learning for one year
Buy this activity
jn-learning_Modal_LoginSubscribe_Purchase
Close
With a personal account, you can:
  • Access free activities and track your credits
  • Personalize content alerts
  • Customize your interests
  • Fully personalize your learning experience
Education Center Collection Sign In Modal Right
Close

Name Your Search

Save Search
Close
With a personal account, you can:
  • Track your credits
  • Personalize content alerts
  • Customize your interests
  • Fully personalize your learning experience
jn-learning_Modal_SaveSearch_NoAccess_Purchase
Close

Lookup An Activity

or

Close

My Saved Searches

You currently have no searches saved.

Close
With a personal account, you can:
  • Access free activities and track your credits
  • Personalize content alerts
  • Customize your interests
  • Fully personalize your learning experience
Education Center Collection Sign In Modal Right
Close