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Community Immunity

About the Substack

Vaccines and public health, grounded in evidence and focused on real-world impact.

Free Subscription Benefits

  • Evidence-based writing on vaccines, public health, and science communication.

Paid Subcription Benefits

  • Occasional subscriber-only posts and informal notes.
  • The satisfaction of directly supporting independent public health writing.

Paid Subscription Plans

  • $50 a year
  • $5 a month

About David Higgins, MD, MPH

Physician, researcher, and writer focused on how evidence and trust shape real-world medical and public health decisions.

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