In response to a request from the Office of Science and Technology Policy (OSTP), the National Academies of Sciences, Engineering, and Medicine convened a standing committee of experts to help inform OSTP on critical science and policy issues related to emerging infectious diseases and other public health threats. The standing committee includes members with expertise in emerging infectious diseases, public health, public health preparedness and response, biological sciences, clinical care and crisis standards of care, risk communication, and regulatory issues. This publication responds to questions concerning the possibility that the SARS-Cov-2 virus could be spread by conversation, in addition to sneeze/cough-induced droplets.