Gachohi et al RVF Model code

This code, implemented in R, is about simulating population dynamics of two species of mosquitoes namely Aedes and Culex and two livestock species namely cattle and sheep. Hosts are classified into four age groups (young, weaner, yearling and adult groups) while vectors are classified into eggs, larvae, pupae and adults. Transition rates govern the population dynamics. Further, the code simulates transmission dynamics of Rift Valley fever virus between the mosquitoes and the livestock. Mosquito growth is regulated by amounts of rainfall implicitly through probability functions - suitability function for Aedes and logistic distribution function for Culex. The code is used to simulate diverse policy-relevant interventions on the effectiveness of reactive and periodic Rift Valley fever vaccination strategies.