The United States issues a health alert in China, following a government employee reporting "abnormal sensations of sound and pressure", one in a range of physical symptoms, from late 2017 through to April 2018. U.S. Secretary of StateMike Pompeo says the State Department is moving medical teams into place in Guangzhou, adding that the incident was "entirely consistent" with reported "sonic attacks" in Cuba in 2016 and 2017.
