Germany’s Hanover University of Veterinary Medicine says it trained sniffer dogs to detect the virus in human saliva samples, with 94 percent accuracy. The dogs are conditioned to smell the “corona odor” coming from cells in infected people and now need to go through feasibility tests before they are put to use in everyday life.
Sweden has followed Denmark in announcing plans to launch a digital document to be given to those who have been vaccinated against the virus. The “COVID passport” will be handed out by the summer, if there is an international standard in place by then, Sweden’s digital minister said.
Oxford University is seeking 820 volunteers for a trial to help establish the efficacy of giving people a first dose of one vaccine followed by a second dose of a different jab.
The UK’s vaccine development minister has said manufacturers are trying to improve their vaccines to counter up to 4,000 variants of the virus across the world.