Thus, higher temperatures may reduce their prevalence. Second, environmental conditions that favor the presence of carriers and hosts must prevail. For example, relative humidity may affect plant life necessary for the feeding of hosts. Under those assumptions, infection of virtually the entire population of Miami was predicted to be possible unless protective measures were taken. An arbovirus is a virus transmitted by an arthropod.
Arthropods are a group of animals that includes insects and arachnids.
Examples or arthropods that transmit disease include mosquitoes and ticks.