Britain Changing Protocols to Combat Virus Variant Last Updated May 14, 2021, 11:12 p.m. ETMay 14, 2021, 11:12 p.m. ET The spread of a variant first detected in India offers a warning for countries easing restrictions even though their vaccination campaigns are incomplete. Here’s what you need to know: A vaccination center in London in April. The British authorities are considering reintroducing local lockdowns to stem the spread of a coronavirus variant first detected in India.Credit...Justin Tallis/Agence France-Presse — Getty Images LONDON — Prime Minister Boris Johnson of Britain said on Friday that vaccination protocols would be changed to swiftly deliver second doses to people over 50-years-old to combat the spread of a coronavirus variant first detected in India, a warning sign for countries that are easing restrictions even though their own vaccination campaigns are incomplete.