Communicable disease threats report, 25 February-3 March 2018, week 9

The ECDC Communicable Disease Threats Report (CDTR) is a weekly bulletin for epidemiologists and health professionals on active public health threats. This issue covers the period 25 February-3 March 2018 and includes updates on hepatitis A, influenza A(H7N9), seasonal influenza, MERS-CoV, mass gathering monitoring, poliomyelitis, yellow fever, and deaths linked to cold weather.