ENH 322 Lecture Notes - Lecture 2: Waterborne Diseases, Infection, Bloodborne
21 Oct 2017
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Document Summary
Principles of disease: pathology: the study of disease, aetiology: study of the cause of a disease, pathogenesis: the development and mechanisms of disease, disease: an abnormal state in which the body is not function normally. Classifying infectious diseases: communicable disease: spread from one host to another, human to human, animal to human, non communicable disease: not transmitted from one host to another, chronic disease (cancer) Disease transmission: direct, human to human (anthroponotic, animal to human (zoonitic) Insects: vehicle, water, food, water impact is larger than food on a community, fomites. Influenza, sars vaccines available: gastrointestinal, food and water born, skin to skin, direct contact, bloodborne, pathogens in the blood. Hepatitis, hiv: mucosal, through mouth, sexually transmitted, vertical, transmitted from mother to child during pregnancy, nosocomial, related to hospital care, spreads fast. Respiratory route: through inhalation of aerosol droplets, directly from an infected person, sneezing, coughing, spitting (worst form, not always airborne, ex.
