GENEVA: The sacrifices made to protect people during the coronavirus pandemic must not be squandered over the festive period, the World Health Organisation’s chief said in a Christmas message.Millions were making "heart-wrenching sacrifices" by staying away from loved ones on Christmas Day, Tedros Adhanom Ghebreyesus said in a video clip posted to Twitter late on Thursday, while others will have a missing face at the family table.He said vaccines, now beginning to be deployed in countries...