Catalog · Physics of COVID-19 Transmission Lecture 38 of 49 Video 4-12: Safety Guideline for COVID-19—Vaccination and Immunity ← Previous Video 4-11: Safety Guideline for COVID-19—Reopening Schools or Businesses Next → Video 5-0: Beyond the Well-Mixed Room—Chapter 5 Overview ✓ Mark complete Materials Transcript (PDF) ↗ transcript