Contact

Definition

Contact refers to the interaction between a pathogen and a host where the pathogen can enter, colonize, and potentially cause disease. It is a key step in the chain of infection.

5 Must Know Facts For Your Next Test

1. Contact is the initial step for pathogens to enter a host.
2. There are different types of contact transmission: direct, indirect, droplet, and fomite.
3. Direct contact involves physical interaction such as touching or sexual contact.
4. Indirect contact involves intermediaries like contaminated surfaces or objects (fomites).
5. Effective hand hygiene can significantly reduce the risk of contact transmission.

Review Questions

Related terms

Pathogen:

An organism that causes disease in its host.

Fomite: Inanimate objects that can transfer pathogens to a new host upon contact.

Droplet Transmission: Transmission through respiratory droplets expelled during coughing or sneezing.