MHR 711 Lecture Notes - Lecture 2: Biological Hazard
20 Jan 2020
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Biohazards: example- needles that were used on a patient that has an infection like hiv, animals like bears, bacteria viruses in food. Chemical agents: pesticides in plants, cleaning products, bleach in hair products. Chain of infection - the process by which biological agents are spread from one host to another. Reservoir - it could be human, animal. Portal of exit- path that biohazardous agent leaves its host. Mode of transmission- means which an agent is carried from one host to another. Like shaking hands, coughing, towels, bugs, tics, Portal of entry- the path of the agent gains access to a new host. Susceptible host- individual or animal that becomes infected with a biohazardous agent. Natural organisms or products of organisms that present a risk to humans. Biohazards are less common than chemical agents. Toxicity - ability to cause injury to human biological tissue. Chemical agents hazards created by one or more chemicals.
