Virus Transmission Modes and Mitigation Strategies, Part 1: Defining Viruses and Droplet Release

The COVID-19crisis has increased concern about virus transmission, including in spacesserved by single-zone HVAC systems. This article looks at how viruses arecommonly transmitted and what mitigation strategies are available. Part 2(April) looks at airborne transmission and the effect of common airdistribution on virus propagation.