Ebola diffused quickly through the population of three adjacent countries in West Africa in
2014-2015. Explain how you think this occurred using the SIR disease transmission-modeling
framework. What do you think the R0 is for the disease? Why do you think it spread so quickly
in the West African context when all other epidemics in other places during the past 40 years
have quickly fizzled out?
Using historical examples of cholera and HIV/AIDS, compare and contrast the types of diffusion
for these two diseases in the United States.
Describe how urban hierarchy is related to the diffusion of cholera in West Africa during the
1970s. Explain the different types of contact diffusion over different geographic landscapes and
features.
In 2015 there was a large outbreak of measles in the United States that started at Disneyland and
some have blamed the lack of herd immunity in the population especially in California. Make an
argument backing up the claim. Do you think there are any similarities in the diffusion patterns
of the 2015 United States measles epidemic and the epidemic described by Hagget from 1966 to
1970 southwest England? Explain.
What are some barriers that could stop the diffusion of some the diseases: Ebola, measles,
cholera, HIV/AIDS?
The gravity model assumes that there is an inverse relationship between population size and
interaction between places. It also assumes an inverse relationship between distance between
places and interaction of the population. Explain how the gravity model might have been useful
in predicting the spread of Ebola in West Africa during the 2014-2015 epidemic.
Human and avian influenza diffusion is complex and still not completely understood. Cliff and
Haggett described patterns of influenza diffusion in Iceland differentiating between patterns via
suspected pathways including airplane travel, road travel, and urban hierarchy (nearest larger
place). Explain how geographic context and genetic change in influenza viruses are factors that
simultaneously control diffusion of this disease..
Analyzing and resolving a communication crisis in Dhaka textiles LTD.pptx
Ebola diffused quickly through the population of three adjacent countr.pdf
1. Ebola diffused quickly through the population of three adjacent countries in West Africa in
2014-2015. Explain how you think this occurred using the SIR disease transmission-modeling
framework. What do you think the R0 is for the disease? Why do you think it spread so quickly
in the West African context when all other epidemics in other places during the past 40 years
have quickly fizzled out?
Using historical examples of cholera and HIV/AIDS, compare and contrast the types of diffusion
for these two diseases in the United States.
Describe how urban hierarchy is related to the diffusion of cholera in West Africa during the
1970s. Explain the different types of contact diffusion over different geographic landscapes and
features.
In 2015 there was a large outbreak of measles in the United States that started at Disneyland and
some have blamed the lack of herd immunity in the population especially in California. Make an
argument backing up the claim. Do you think there are any similarities in the diffusion patterns
of the 2015 United States measles epidemic and the epidemic described by Hagget from 1966 to
1970 southwest England? Explain.
What are some barriers that could stop the diffusion of some the diseases: Ebola, measles,
cholera, HIV/AIDS?
The gravity model assumes that there is an inverse relationship between population size and
interaction between places. It also assumes an inverse relationship between distance between
places and interaction of the population. Explain how the gravity model might have been useful
in predicting the spread of Ebola in West Africa during the 2014-2015 epidemic.
Human and avian influenza diffusion is complex and still not completely understood. Cliff and
Haggett described patterns of influenza diffusion in Iceland differentiating between patterns via
suspected pathways including airplane travel, road travel, and urban hierarchy (nearest larger
place). Explain how geographic context and genetic change in influenza viruses are factors that
simultaneously control diffusion of this disease.
