BIOL 308 Lecture Notes - Lecture 13: Compartmental Models In Epidemiology, Vertically Transmitted Infection
Document Summary
E. g. plant fungi that only attack leaves (co-evolve specificity) Parasite has a long life cycle associated/dependent/supported by the host. Maximum benefit of the parasite is reached if it only become very virulent (increase parasite fitness, but decrease host fitness) at the end of its life cycle. The host is collectively good for the whole population of parasite. E. g. measles, virus infection; vaccine dampened the cycle. Some cycles can be really long, harder to study the environmental impact etc. Why infection model is different from predator-prey model. Hard to keep track of parasite density (e. g. micro parasites, like virus) Density of infected host is more important than density of parasite. Infection will spread through contact (probability of transmission, analogous to predator prey contact, is dependent on density) All different states gives birth at the same rate, and all give birth to susceptible states (assuming no vertical transmission, and immunity can not be transferred) Same mortality rate in susceptible and recovered population.
