Lecture 1 - Introduction & Risk Factors for Disease PDF

The Human Body and Disease Introduction & Disease Risk Factors Biol 1410 Dr Greg Byrne Dr Alice McEvoy disease (n.) early 14c., "discomfort, inconvenience," from Old French desaise "lack, want; discomfort, distress; trouble, misfortune; disease,...

The Human Body and Disease Introduction & Disease Risk Factors Biol 1410 Dr Greg Byrne Dr Alice McEvoy disease (n.) early 14c., "discomfort, inconvenience," from Old French desaise "lack, want; discomfort, distress; trouble, misfortune; disease, sickness," from des- "without, away" (see dis-) + aise "ease" (see ease). Sense of "sickness, illness" in English first recorded late 14c.; the word still sometimes was used in its literal sense early 17c.  Disease In human beings, a disease refers to any condition that causes discomfort, dysfunction, disability, distress, and/or death to the person afflicted. Diseases have symptoms that can be observed in patients: Physical Mental  Known Influenza Pandemics Case Pandemic Name of Subtype Date Deaths fatality Severity pandemic involved rate Index Asiatic Flu possibly 1889–1890 1 million 0.15% NA (Russian) H3N8 1918 flu 50 to 100 pandemic 1918–1920 2% H1N1 5 million (Spanish flu) 1 to 1.5 Asian Flu 1957–1958 0.13% H2N2 2 million Hong Kong 0.75 to 1 1968–1969