Infection control - chain of infection Flashcards
How many parts are in the chain of infection? coi
6
What is the first part of coi?
Infectious agent
What is the second part of coi?
Reservoirs
What is the third part of coi?
Portal of exit
What is the fourth part of coi?
Means of transmission
What is the fifth part of coi?
Portal of entry
What is the sixth part of coi?
Susceptible host
What happens at infectious agent stage?
This is the source of infection, what the infection is - parasite, prion, bacteria, fungi, virus, protozoa
What happens at the reservoirs stage?
This is what carrys the source of infection - any object, furniture, people, body, animals, insects, water food oxygen temp ph levels and light
What happens at the portal of exit stage?
The mirco-organisms (infectious agent) finds a portal of exit through - bodily fluids, saliva blood feaces, open wound, airbourne, droplet, vomit, skin and mucous membranes, urinary tract, reproductive tract, eg chlamydia
What happens at the means of transmission stage? vehicle stage
This is the route that the mirco organisms will use to spread - sex kissing touching needles water bottles toothbrushes and any contact with anything
What happens at the portal of entry stage?
how can these organisms enter the body - broken skin mucous membrane inhaling resp wound ear eyes GI
CAN GERMS COME IN ANY WAY THEY CAN EXIT?
YES
Match the following? Res poe ia mot poe
with
droplet, fungi, food, GI tract, wound
Reservoir - food portal of entry - wound infectious agent - fungi Modes of transmission - Droplet Portal of exit - GI tract
What is a susceptible host?
Someone that is more prone to infections, eg elderly, babies, weakened immune system, anyone really
