Indirect contact transmission

Definition

Indirect contact transmission occurs when pathogens are spread through an intermediary object or surface, rather than direct person-to-person contact. Common intermediaries include doorknobs, utensils, and medical instruments.

5 Must Know Facts For Your Next Test

1. Indirect contact transmission involves the transfer of infectious agents via a fomite (an inanimate object).
2. Common diseases spread by indirect contact transmission include the flu, norovirus, and MRSA.
3. Hand hygiene and proper sanitation are crucial in preventing indirect contact transmission.
4. Pathogens can survive on surfaces for varying durations, from minutes to months, depending on the microorganism and the environment.
5. Healthcare settings often implement protocols such as sterilization of medical equipment to mitigate this mode of transmission.

Review Questions

• What is an example of a fomite in indirect contact transmission?
• How long can pathogens typically survive on surfaces?
• What measures can be taken to prevent indirect contact transmission?

Related terms

Direct Contact Transmission: The spread of infectious agents through physical touch between an infected person and a susceptible host.

Vector-Borne Transmission: The spread of disease through vectors like mosquitoes or ticks that carry pathogens from one host to another.

Droplet Transmission: The spread of infectious agents via respiratory droplets expelled when an infected person coughs or sneezes.