6. In epidemiology, the basic reproduction number of an infection is the expected number of cases directly generated by one case of the infection. How would you expect the basic reproduction number of an infection to influence the marginal social benefit of research efforts aimed at finding a vaccine against the infection? If the basic reproduction number of COVID-19 increases, then the marginal social benefit of research efforts to find a vaccine would most likely A. decrease B. increase C. not change
Added by Donald S.
Close
Step 1
A higher R0 indicates that the infection is more contagious and has the potential to cause more cases. Show more…
Show all steps
Your feedback will help us improve your experience
Madhur L and 73 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
The following question is about SIR (susceptible, infected, recovered) models. Remember, in SIR models you can plot the number of susceptible (S), infected (I), and recovered (R) individuals on the y-axis as a function of time (on the x-axis), resulting in a curve for each of the three groups. In your reading, a more realistic model of measles outbreaks is presented. Unlike the simple SIR model discussed earlier in the module, this model includes births, and it predicts that measles outbreaks should cycle over time. How do births affect the disease dynamics? A) Births increase the number of recovered (resistant) individuals in the population. B) Births increase the number of susceptible individuals in the population. C) Births increase the probability that infected people transmit the disease. D) Births themselves occur in cycles, decreasing herd immunity in pulses.
Madhur L.
The Centers for Disease Control and Prevention (CDC) recommended against vaccinating the whole population against the smallpox virus because the vaccination has undesirable, and sometimes fatal, side effects. Suppose the accompanying table gives the data that are available about the effects of a smallpox vaccination program. $$ \begin{array}{ccc} \begin{array}{c} \text { Percent of } \\ \text { population } \\ \text { vaccinated } \end{array} & \begin{array}{c} \text { Deaths due to } \\ \text { smallpox } \end{array} & \begin{array}{c} \text { Deaths due to } \\ \text { vaccination side } \\ \text { effects } \end{array} \\ \hline 0 \% & 200 & 0 \\ 10 & 180 & 4 \\ 20 & 160 & 10 \\ 30 & 140 & 18 \\ 40 & 120 & 33 \\ 50 & 100 & 50 \\ 60 & 80 & 74 \\ \hline \end{array} $$ a. Calculate the marginal benefit (in terms of lives saved) and the marginal cost (in terms of lives lost) of each $10 \%$ increment of smallpox vaccination. Calculate the net increase in human lives for each $10 \%$ increment in population vaccinated. b. Using marginal analysis, determine the optimal percentage of the population that should be vaccinated.
Microbe-Human Interactions can be examined in terms of epidemiology. What is Epidemiology? Epidemiology is the method used to find the causes of health results and diseases in populations. T or F 2. The microbiome benefits the host by the process of microbial antagonism. T or F 3. Regarding the normal flora. a. variations in flora distribution are not affected by environmental conditions b. the normal resident microbes are present in the lungs c. all the above d. none of the above 4. The severity of a microbial disease depends on the virulence of the host. T or F 5. An infectious dose is the maximum number of microbes required for infection to proceed T or F 6. COVID-19, Ebola and Influenza were found in animals & are transmissible to humans. a. these viruses are non-zoonotic. b. their morbidity rate is the number of deaths inflicted on a population c. their mortality rate is the number of people afflicted with disease in a population. d. All the above e. None of the above 7. Regarding Vectors. a. a live animal that transmits an infectious agent from one host to another is called a vector b. mechanical vectors actively participate in a pathogen's life cycle c. biological vectors transport infectious agent without being infected d. all the above e. none of the above
Dominador T.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD