Photo by: Pablo Martinez Monsivais President Obama speaks during a briefing on the ongoing response to the Zika virus with members of his public health team in the Oval Office of the White House on July 1, 2016. Joining Obama are Health and Human Services Secretary Sylvia Mathews Burwell (left) and Dr. Tom Frieden (center), director of the Centers for Disease Control and Prevention. (Associated Press) **FILE**