Catalog · Physics of COVID-19 Transmission Lecture 36 of 49 Video 4-10: Safety Guideline for COVID-19—Risk Scenarios ← Previous Video 4-9: Safety Guideline for COVID-19—Role of Prevalence of Infection Next → Video 4-11: Safety Guideline for COVID-19—Reopening Schools or Businesses ✓ Mark complete Materials Transcript (PDF) ↗ transcript