MBIO 3000 Lecture 13: Lecture 13 - MBIO 3000
4 Mar 2018
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Document Summary
Why disinfect: to get rid of u(cid:374)(cid:449)a(cid:374)ted pathoge(cid:374)ic (cid:373)icroorga(cid:374)is(cid:373)s, to eliminate - or at least reduce - exposure risk. Spread of pathogens: aides are tangible items, the 5 f"s. Flies: most common transmission, mexico - buffet - rice is the worst thing to eat because it attracts a lot of flies, and the rice is not replaced all day because it can be out for that long. Fomites: water, air, vehicles, transplanted blood and tissues. Indirect - coming into contact with something that has the pathogen on it. Sanitizer: an agent that reduces the numbers of vegetative bacteria only. Cide: kills (determined by specific testing: bactericide: destroys vegetative bacteria only (=germincide, sporicide: destroys bacterial spores, fungicide: destroys fungal spores, tuberculocide: destroys m. tuberculosis, virucide: destroys specific viruses. Static: prohibits growth but may not kill: bacteriostatic: prevents growth of veg bacteria, tuberculostatic: prohibits growth of mycobacterium tuberculosis. Resistance to disinfectants (see picture on slide: highest resistance to lowest resistance, prions.
