BIOLOGY 3SS3 Lecture 7: disease.complete
26 Sep 2016
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Infectious disease: extremely common, huge impacts on ecological interactions, a form of exploitation, but doesn"t t well into our previous modeling framework. Disease agents: can you name an infectious agent that causes disease in humans, disease agents vary tremendously: Most viruses have just a handful of genes that allow them to hijack a cell and get it to make virus copies. Answer: in uenza virus, ebola virus, hiv, measles. Bacteria are independent, free-living cells with hundreds or thou- sands of chemical pathways. Eukaryotic pathogens are nucleated cells who are more closely related to you than they are to bacteria. Microparasites: for infections with small pathogens (viruses and bacteria), we don"t attempt to count pathogens, but instead divide disease into stages. Microparasite models: we model microparasites by counting the number of hosts in various states: Infectious individuals are infected and can infect others.
