Ch 29 Infection Prevention & Control Flashcards
Infection
The invasion of a susceptible host by pathogens or Microrganisms resulting disease
Pathogens
Pathogen’s or microorganisms results in disease
Colonization
The presents and growth of microorganisms within a host but without tissue invasion or damage
Communicable disease
An infectious disease that can be transmitted directly from one person to another
Symptomatic
If the pathogen’s multiply and cause clinical signs and symptoms
Asymptomatic
If clinical signs and symptoms are not present
Chain of infection
1. Infectious agent
Microorganisms include bacteria, viruses, fungi and Protozoa
Virulence
Their ability to enter and survive in a host and the susceptibility of those
Chain of infection
2. Reservoir
A place where Microorganism survive, multiply and await transfer to a susceptible host
Chain of infection
3. portal of exit
Portal of exit include sites such as blood, skin and mucous membranes, respiratory tract, etc.
Chain of infection
4. Modes of transmission
Each disease has a specific mode of transmission. The major route of transmission for pathogens Identified in the healthcare setting is the unwashed hands of healthcare workers
Chain of infection
5. Portal of entry
Organisms enter the body through the same routes they used for exiting
Chain of infection
6. Susceptible host
Susceptibility to infectious agents depends on an individual’s degree of resistance to pathogen’s.
Normal flora
Do not usually cause disease when residing in their usual area of the body but instead participate in maintaining health
Course infection by stage
1.incubation period
Entrance of pathogen into body and appearance at first symptoms