HST250H1 Lecture Notes - Lecture 12: Disease Surveillance, Yellow Fever, Optimal Control

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Involves host, agent, and environment: the (cid:862)epi(cid:863) tria(cid:374)gle. Plasmodium: primary prevention is to prevent it from spreading it to yourself, secondary prevention is to prevent it from spreading it to others, primordial prevention is spreading it to environment. Developing case definitions (symptoms, timing, course of disease) Determining whether the cases are related (epi linked) Determing the extent of the outbreak or public health issue. Contagion: the cause of deiasease is germs, the cause of disease is transmission of infectious agents microorganisms by direct or indirect contact between individuals, the four major types of germs are bacteria viruses fungi and protozoa. Illness is seen as product of infection passed from person to person or by touching something that is contaminated. The solution is inoculation through routine vaccination immunization and eradition: to prevent infections by killing harmful germs with the use of antibacterial lantivairal anti fungal and antibiotic medications: and sanitfation.

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