control of microorgansims :) Flashcards
transmission of infection
aerosols
coughs
direct/indirect contact
ingestion
requirements for infection
reach host
attach and grow on host
evade host defences
prevention of transmission
cover mouth gloved hands washing UV light Microwaves chemcals
sterilising with heat
hot air dry oven
steam
- dentature proteine
methods of disinfection
cleaning - removes organisms and helps penetration of agent
heat
chemical agents
disinfectants
alcohol
aldehyde
halogen
biguadines
what does alcohol do
denature protein
what does aldehyde do
cross link protien
what do halogens do
oxideses cell
creates free radical
what do biguanides do
membrane disruption
what is decimal reduction rtime
time required to remove one log of bacteria
monitoring microoragmsims
bronwnes indicators
autoclave tape
live microorganism
other mechanisms of control
prevent and treat
- immunisation for immune repsonce
- antimicrobial agents
types of vaccines
live
killed
toxoid
purified cell component
what is a toxoid
heat/formaldehyde treated cell product
