EESA10H3 Lecture Notes - Lecture 7: Abdominal Pain, Fomite, Rodent
20 Apr 2016
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Document Summary
Infectious disease is host-centered concept human body is a habitat and host to many organisms associations that harm or bother us are infectious diseases; agents are pathogens zoonosis-infectious disease transmissible to humans from other animals. Type of pathogens worms multicellular; parasitic protozoa- unicellular; parasitic. Viruses- strand of dna or rna; parasitic o o o o o o. Active immunity on first exposure to antigen, body produces antibodies. If enough members of a group are immune, hard to maintain chain of infection. Evolution of strategies for managing transmission of disease. Isolation: the separation of persons who have an infectious illness. Quarantine; the separation of persons who have been exposed to an infectious agent. Populations of pathogens become resistant over time o: methicillin-resistant staphylococcus aureus o o. High reproductive rate allow them to become genetically resistant quickly. Overuse of antibiotics (antibiotics in food additives to boost livestock)
