MIMM 211 Lecture Notes - Lecture 27: Computer Mouse, Shigatoxigenic And Verotoxigenic Escherichia Coli, Safety Data Sheet
15 Nov 2016
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50 bacteria/inch^2 on a computer mouse 32 million bacteria/inch^2 on skin! Fungi, bacteria, viruses, and prions as well. Food industry outbreaks: poisoning, spoilage via mould/bacterial overgrowth. Medicine: antimicrobial therapy to keep instruments, foreign material and environment/air of surgery sterile, airborne biohazards for immunocompromised hosts (viruses, fungi, nosocomial diseases (originating in hospital) transmission (bacteria, viruses) Biohazard control: waste from labs, hospitals. Msds stuff: transmission of ebola, tb, sars, blood and other biological products can transmit hiv, viruses. Environmental control: (environmental issue: waste, water management. Antisepsis: reduce population, involve living tissue so you don"t die along with the mo, gentlest, spores survive, ex. Sanitization disinfectation: reduce total population to a safe standard, spores survive, pathogens are mostly killed, ex. Sterilization: all mos, cells are killed, incl viruses and spores, ex. Influencing factors/specific conditions: population size, composition, potency, concentration of antimicrobials, contact time, temperature, local environment. D value: decimal reduction time, aka amt of time required to kill 90% mos under specific conditions.
