Transmission refers to the mechanism by which an infectious agent is spread from a source or reservoir to a susceptible host. It can occur through various pathways, including direct contact, indirect contact, and vectors.
5 Must Know Facts For Your Next Test
Direct transmission involves immediate transfer of the pathogen through physical contact such as touching or biting.
Indirect transmission occurs when pathogens are spread via inanimate objects called fomites, such as doorknobs or medical instruments.
Vector-borne transmission involves carriers like mosquitoes or ticks that transmit pathogens between hosts.
Airborne transmission happens when infectious agents are carried on dust particles or droplets that remain suspended in the air for long periods.
Droplet transmission occurs when respiratory droplets carrying pathogens are expelled during coughing, sneezing, or talking and land on mucosal surfaces.
Review Questions
Related terms
Fomite: An inanimate object that can carry infectious agents from one individual to another.