Notifications sent by the United States National Focal Point to the World Health Organization (WHO), August 2007 through September 2016
Timeline depicting the IHR “Article 6” or “Article 7” notifications sent by the U.S. NFP to the WHO from August 2007 through September 2016. In summary, respiratory disease notifications fell dramatically in 2013 following a U.S. policy change that applied to novel (variant) influenza viruses. Overall, three notifications were directly related to an official, WHO-declared PHEIC. Until 2016 and the Zika virus outbreak in the Americas, respiratory and foodborne events were the most common events in the U.S. notified to WHO.