What's Herd Immunity? Physician Explains How It Protects Us

How do umbrellas protect us from disease? Austin pediatrician Ari Brown, MD, a Texas Medical Association physician leader, uses an umbrella analogy to explain how community immunity works, in this video.
A community with enough vaccinated people can protect each other from the spread of contagious disease. Herd immunity – also known as community immunity – protects those who are not immune and those who cannot or choose not to get vaccinated. Some physicians warn a failure to maintain herd immunity reduces protection for everyone and contributes to disease outbreaks.
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For more than a year TMA highlighted contagious diseases that childhood and adult vaccinations can prevent, including measles, chickenpox and shingles, pertussis (whooping cough), and many others. TMA also has explained how vaccines protect people, and addressed the autism myth. TMA seeks to raise immunization awareness and fight back against false claims that hamper immunizations.