Community Spread vs. Transmission

Transmission is technically used to describe the way in which the SARS-CoV-2 virus spreads from person to person. It’s typically used alongside words like contact or fomitedroplet, and airborne.

But community transmission and community spread are terms used interchangeably to describe what happens when there is a significant disease spread in a certain population with no clear source. With COVID-19, high community transmission or spread complicates response efforts like contact tracing.