WASHINGTON, DC - JANUARY 29: Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, discusses the Zika virus during remarks before the Economic Club of Washington January 29, 2016 in Washington, DC. Fauci said that there is no indication that anyone has been bitten by a mosquito in the United States and acquired the Zika virus. (Photo by Win McNamee/Getty Images)