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Lecture 7

Study Guide for Lecture 7: information from lecture slides + information added by prof during lecture

3 Pages
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Department
Environmental Science
Course Code
EESA10H3
Professor
Jovan Stefanovic

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EESA10 – Human Health and the Environment
LECTURE 7
Slide: Biological Hazards
-Nontransmissible diseases: cannot be transferred from one human to another human.
Usually have more than 1 cause and not caused by any living things. Examples:
cardiovascular, cancer, diabetes, asthma)
-Transmissible diseases: certain living things have role in their occurrence, caused by
infectious agents (bacteria, viruses), can be transmitted from person to person, animal to
person, or person to vector
-Most bacterial diseases can be effectively cured by antibiotics, but antibiotics cannot cure
viral diseases (viruses)
-Germs and bacteria multiple very quickly, adapt to antibiotics, and then become resistant
to them
oAntibiotic overuse also leads to resistance
Slide: Tuberculosis
-Transmitted through coughing, sneezing, speaking, kissing, spitting
-Most commonly attacks the lungs, caused by bacteria
-Symptoms: chest pain, coughing up blood, prolonged cough, fever, chills, night sweats,
appetite loss, weight loss, paleness
Slide: Anthrax
-Bacillus anthracis (large, spore forming bacteria)
-3 forms of anthrax:
ocultaneous: from the skin, most common naturally occurring type, 20% of
untreated cases result in death
oinhalation: spores are inhaled and affects the lungs mainly, most lethal form of
anthrax, 75% of cases result in death, may progress to respiratory failure
ogastrointestinal: something/spores are ingested, 25-60% of cases result in death
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Description
EESA10 Human Health and the Environment LECTURE 7 Slide: Biological Hazards - Nontransmissible diseases: cannot be transferred from one human to another human. Usually have more than 1 cause and not caused by any living things. Examples: cardiovascular, cancer, diabetes, asthma) - Transmissible diseases: certain living things have role in their occurrence, caused by infectious agents (bacteria, viruses), can be transmitted from person to person, animal to person, or person to vector - Most bacterial diseases can be effectively cured by antibiotics, but antibiotics cannot cure viral diseases (viruses) - Germs and bacteria multiple very quickly, adapt to antibiotics, and then become resistant to them o Antibiotic overuse also leads to resistance Slide:
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