Vector-Borne Diseases in the United States, 2004-2018
Almost everyone has been bitten by a mosquito, tick, or flea. These can be vectors for spreading pathogens (germs). A person who gets bitten by a vector and gets sick has a vector-borne disease, like dengue, Zika, Lyme, or plague.
Disease cases more than doubled between 2004 and 2018. Find out what’s happening in your state.
Reportable Vector-Borne Disease Cases by State
Page last reviewed: May 15, 2020