Fever remains quite common but a loss of smell no longer appears in the top 10 symptoms, Professor Tim Spector, who runs the Zoe Covid Symptom study and app, said.
He said: “Since the start of May, we have been looking at the top symptoms in the app users – and they are not the same as they were.”
He went on: “This variant seems to be working slightly differently.
“People might think they’ve just got some sort of seasonal cold and they still go out to parties and they might spread around to six other people.
“We think this is fuelling a lot of the problem.