1. Which of the following is NOT true of Guinea worm disease? A. The infection starts when a person ingests contaminated water containing copepods infected with Guinea worm larvae. B. The larvae mature into adult male and female worms in the heart tissue. C. The males die, but the females continue to grow in the victim's tissue. D. The disease is not fatal but can be debilitating E. There are no medications or vaccines for the disease. 2. Infectious diseases are a type of hazard. A. physical B. chemical C. biological D. human-caused E. Infectious diseases are not hazardous. 3. Waterborne and diseases are the main infectious disease threats to human health. A. airborne B. chemical hazard C. vector-borne D. physical hazard E. biological hazard 4. Which human activity has NOT influenced the prevalence and seriousness of health hazards? A. deforestation B. urbanization C. dam building D. habitat fragmentation E. All of these options have influenced the prevalence and seriousness of human health hazards. 5. In Guinea worm disease (GWD), which organism is a vector? A. humans B. copepods C. Guinea worms D. contaminated water E. lions Why is the health of the natural environment one of the biggest influences on human health hazards? A. The health of the natural environment has a large influence on the severity and number of human health hazards because we humans have disrupted the Earth's ecosystems to better suit our own needs and wants. B. In terms of human health, balanced ecosystems can select for the overpopulation of a particular pathogen or vector. C. Deforestation increases the breeding grounds for mosquitoes harboring the protozoan that causes malaria or dengue fever virus. D. Both A and C are correct E. Both A and B are correct 7. Which of the following is NOT a way public health programs work to improve the health of human populations? A. provide information and health care advice to communities B. provide needed preventative medical care and treatment C. make recommendation to improve health in specific groups and the population as a whole D. analyze statistics related to a person's health to determine risk for various population groups E. All of these answers are correct. 8. What was the main problem related to preventing Guinea worm disease in the Nigerian village where Ruiz-Tiben was working? A. too much urbanization B. habitat fragmentation C. deforestation D. human resistance to change E. climate change 9. Why was treating Guinea worm disease in Sudan so problematic? A. The country was too poor to afford treatment. B. The country was in the middle of a civil war. C. No workers wanted to go into the country to help. D. The U.S. government forbid any one to help the people. E. It was too much work to help the nation. 10. Which of the following is TRUE of global environmental health? A. Infectious and parasitic diseases account for 80% of deaths due to environmental factors worldwide each year. B. Zoonotic diseases cause the most deaths.

1. 1. Which of the following is NOT true of Guinea worm disease? A. The infection starts when a
person ingests contaminated water containing copepods infected with Guinea worm larvae. B.
The larvae mature into adult male and female worms in the heart tissue. C. The males die, but the
females continue to grow in the victim's tissue. D. The disease is not fatal but can be debilitating
E. There are no medications or vaccines for the disease. 2. Infectious diseases are a type of
hazard. A. physical B. chemical C. biological D. human-caused E. Infectious diseases are not
hazardous. 3. Waterborne and diseases are the main infectious disease threats to human health.
A. airborne B. chemical hazard C. vector-borne D. physical hazard E. biological hazard 4. Which
human activity has NOT influenced the prevalence and seriousness of health hazards? A.
deforestation B. urbanization C. dam building D. habitat fragmentation E. All of these options
have influenced the prevalence and seriousness of human health hazards. 5. In Guinea worm
disease (GWD), which organism is a vector? A. humans B. copepods C. Guinea worms D.
contaminated water E. lions Why is the health of the natural environment one of the biggest
influences on human health hazards? A. The health of the natural environment has a large
influence on the severity and number of human health hazards because we humans have
disrupted the Earth's ecosystems to better suit our own needs and wants. B. In terms of human
health, balanced ecosystems can select for the overpopulation of a particular pathogen or vector.
C. Deforestation increases the breeding grounds for mosquitoes harboring the protozoan that
causes malaria or dengue fever virus. D. Both A and C are correct E. Both A and B are correct 7.
Which of the following is NOT a way public health programs work to improve the health of
human populations? A. provide information and health care advice to communities B. provide
needed preventative medical care and treatment C. make recommendation to improve health in
specific groups and the population as a whole D. analyze statistics related to a person's health to
determine risk for various population groups E. All of these answers are correct. 8. What was the
main problem related to preventing Guinea worm disease in the Nigerian village where Ruiz-
Tiben was working? A. too much urbanization B. habitat fragmentation C. deforestation D.
human resistance to change E. climate change 9. Why was treating Guinea worm disease in
Sudan so problematic? A. The country was too poor to afford treatment. B. The country was in
the middle of a civil war. C. No workers wanted to go into the country to help. D. The U.S.
government forbid any one to help the people. E. It was too much work to help the nation. 10.
Which of the following is TRUE of global environmental health? A. Infectious and parasitic
diseases account for 80% of deaths due to environmental factors worldwide each year. B.
Zoonotic diseases cause the most deaths globally. C. No environmental hazards are modifiable.
D. Environmental factors contribute to 77% of deaths annually. E. The main environmentally
mediated infectious diseases are diarrheal diseases, lung infections, and mosquito-transmitted
diseases.