This variable is dependent on different mosquito species. Different species vary in their blood feeding behavior and host preference. For example, the Aedes aegypti mosquito reside near urban areas and feed upon human hosts.

University of California, Davis

The vectorial capacity of mosquitoes is mostly influenced by these variables:
- extrinsic incubation period
- probability of mosquito daily survival
- probability of a host being fed upon

Mosquito Vectorial Capacity

Rückert, Claudia, and Gregory D Ebel. “How Do Virus-Mosquito Interactions Lead to Viral Emergence?” Trends in Parasitology, U.S. National Library of Medicine, Apr. 2018, www.ncbi.nlm.nih.gov/pubmed/29305089. 

How do virus-mosquito interactions lead to viral emergence?

Extrinsic Incubation Period (EIP) refers to the amount of time that it takes for a virus to infect the midgut and disseminate to the saliva.

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