HLTB21H3 Final: HLTA01 - Final Exam Notes.docx
Document Summary
Plague highly infectious ,usually fatal epidemic disease. Etiology (3: changes in environment = change in habits, food & conditions; parasites & disease become prevalent due to pop. Growth: dense cities & close knit communities = easy transmission, uruk 5,500 years ago development of ancient cities enabled: Closer proximity to neighbours, smaller living spaces, waste secreted back into environment: 3 factors (revolutions) of population growth. Cereal grains were harvested w/ ease b/c of tools, storage & processing of these grains. Used: baskets, mortar & pestles, techniques, storage pits. Population was less dense but people started domesticating animals & adopting sedentary lifestyle (food growth = exposure to parasites. Economic trade, ties, political structures & religious practices occur; selective advantages to those in control (group cohesion) Irrigation practices = favorable environments for parasites b/c of abundant moisture liquid medium of tranmission. Consequences: increase in human disease (easily transmitted), exposure of disease b/c of fertilization (favored disease), domestication (zoonotic)