WHO: general global decline in Covid-19 cases no excuse for complacency Head of emerging diseases unit at World Health Organisation calls on nations to increase precautions to stamp out Covid-19 An elderly woman receives the Sinovac vaccine against Covid-19 at a nursing home during the start of vaccination for those over 80 in Medellin, Colombia. EPA Doctors tend to a patient suffering from Covid-19 and receiving oxygen, in a ward for coronavirus patients at the Martini hospital in Mogadishu, Somalia. AP Photo A patient with coronavirus breathes with the help of an oxygen mask at an intensive care unit in the regional hospital in Chernivtsi, western Ukraine. AP Photo