A number of investigators, most notably Macdonald (Macdonald, 1952) have developed mathematical versions of malaria transmission which make an effort to correlate human an infection Using the prevalence of malaria an infection in mosquitoes. Soon after progressing by 4 larval levels, or instars, the mosquito is ready to pupate. https://social-medialink.com/story2830971/the-definitive-guide-to-what-mosquitoes-carry-diseases