On Apr. 21, 2017, the U.S. Centers for Disease Control and Prevention (CDC) published updated guidelines for use of non-pharmaceutical measures to help prevent spread of pandemic influenza based on latest scientific evidence. The Guidelines explained why NPIs should be used during a flu pandemic, summarize key lessons learned from the 2009 H1N1 pandemic response.

The 2017 Guidelines replaced the 2007 Interim Pre-pandemic Planning Guidance: Community Strategy for Pandemic Influenza Mitigation in the U.S.