BIOLOGY 3SS3 Lecture Notes - Lecture 7: Conceptual Model, Life Table, Exponential Growth
12 Apr 2017
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Document Summary
Extremely common with huge impacts on ecological interactions. Microparasites infections with small pathogens (viruses/bacteria) don"t attempt to count pathogens, but divide disease into stages: latently infected, productively infected, recovered, model: counting # of hosts in various states. Many diseases can observe + estimate r (exponential rate of spread) What factors contribute to that and how it relates to k (number of new cases/case) R0 can have different meanings: actual value of r before an epidemic, hypothetical value assuming no immunity, hypothetical value assuming no control efforts whatsoever. Proportion of transmission that happens for different ages of infection. How long from time you are infected to time you infect someone else. Analogous to a life table effective generation time g has units of time. Know r, what does the generation time tell us about r: faster generations (small g) faster exponential growth (large r)
