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Lecture 7

LECTURE 7: BIOLOGICAL HAZARDS AND HUMAN HEALTH

5 Pages
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Department
Environmental Science
Course Code
EESA10H3
Professor
Jovan Stefanovic

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Description
Lecture 7 Biological Hazards and Human HealthBiological Hazards Nontransmissible diseases cardiovascular heart attack cancer diabetes asthma closely related with allergens Transmissible diseases infectious agent bacteria viruses protozoa Growing germ resistance to antibiotics High reproductive rate allow them to become genetically resistant quickly regeneration and mutations Overuse of antibiotics when not recommended by the doctor Antibiotics in food additives to boost livestock prevent diseases in animalswould save them money but the quality of the food goes badBacteria TuberculosisAnthrax BrucellosisDifferent forms of PlagueViruses HIV AIDSSARS Bird flu now in Europe but also in North America Smallpox West Nile virusBACTERIAL diseasesTuberculosis significant threat to the world Old disease some mummies from Egypt from the pyramids are found to have some symptoms ie they die coz of the disease Later in was a huge thproblem in the 1819 century transfer among family members People used to marry after checking if there was a past history of TB in the family Disease was related with vampires This disease it not transferred by genes Sick people had pale faces coughed blood and dark eyesIn 2004 mortality statistics included 146 million chronic active TB cases chronic not ill right away latent disease 89 million new cases 16 million deaths mostly in developing countries wet walls improper sanitation improper housing and they catch the disease faster as it is related to social and health system Differences in health care systems Transmissioncough sneeze speak kiss or spit of ill person Most commonly attacks the lungs Symptoms include chest pain coughing up blood and a productive prolonged cough for more than three weeks fever chills night sweats appetite loss weight loss paleness and often a tendency to fatigue very easily
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