Climate change, urbanization, and changes in human populations have driven many beloved species to the brink of extinction. But one of the deadliest animals in the world — the mosquito — is thriving.
Around 700,000 people die every year from mosquito-borne disease. The biggest culprit is malaria, but other mosquito-borne diseases, like dengue fever, chikungunya, and Zika, have proliferated wildly in recent years, and now make up a substantial share of the global burden of mosquito-borne disease. By some estimates, the number of dengue infections has increased 30-fold in the past 30 years.
The culprit? Climate change, plus urbanization and changes in where human populations are concentrated. And a new study in Nature Microbiology suggests that things will only get worse. Using statistical mapping techniques, they model how two disease-carrying mosquitos, Aedes aegypti and Aedes albopictus, have spread over the last 30 years, and predict how they’ll spread over the next 30.