What mode of transmission involves large particles that can be inhaled by a susceptible host?

Droplet spread is a mode of transmission that occurs when large respiratory droplets containing infectious agents are expelled into the air and can be inhaled by individuals nearby. These droplets are typically produced during actions such as coughing, sneezing, or talking. The key characteristic of droplet spread is that these droplets do not remain suspended in the air for long periods and have a relatively short distance of travel – typically up to about six feet from the source.

In contrast, airborne transmission involves much smaller particles that can remain suspended in the air for longer durations and travel greater distances, making it distinct from droplet spread. Direct contact refers to the transfer of infectious agents through physical touch, and indirect contact involves transmission via contaminated objects or surfaces. Understanding this distinction is crucial for implementing appropriate infection control measures and protecting susceptible hosts from infection.