With more than 23,100 cases of Zika in the continental U.S. and U.S. territories — including four newly reported non-travel cases in Miami-Dade County, Fla — this Forum continued a conversation begun in March 2016 to discuss the risks and response to the spreading Zika virus. The focus was on the U.S. and Caribbean, as well as other regions experiencing increases in cases. Public health experts examined our deepening understanding of how the virus works and how its spread may be controlled; where Congressional funding might be best spent; how vaccines might potentially help; and how public health messaging around the virus may impact at-risk groups, particularly pregnant women. This event was presented September 29, 2016 in Collaboration with Reuters. Watch the entire series from The Forum at Harvard T.H. Chan School of Public Health at www.ForumHSPH.org.