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CDC: Illnesses from ticks and mosquitos tripled over 13 years

Data: Centers for Disease Control; Graphic: Chris Canipe/Axios

Illnesses spread by mosquitoes, ticks and fleas have greatly expanded in both infection rates and in geographical reach, with more than 640,000 cases reported and 9 new germs discovered between 2004–2016, officials from the Centers for Disease Control and Prevention said Tuesday.

Why now: While CDC director of vector-borne diseases Lyle Petersen declined to blame climate change, he said warmer temperatures are escalating the issue along with other factors like increased global trade, patterns of movements of people and animals, and the spread of people — and deer — into rural areas.