LONDON : Health experts on Thursday expressed strong skepticism about the British government's ambitious plans to carry out millions of coronavirus tests daily in a bid to help people resume normal lives in the absence of a vaccine.Prime Minister Boris Johnson said Wednesday he wanted to roll out much simpler, faster mass testing “in the near future" to identify people who don't have the virus so that they can “behave in a more normal way in the knowledge they can't infect anyone else."Johnson said people with such negative “passports" could then attend events at places like theaters, and he said he was “hopeful" that the plan will be widespread by springtime.Johnson made the comments as he announced strict new measures to try to curb a.