U.K.’s Johnson to Urge Caution as Delta Spreads: Virus Update Bloomberg 2 hrs ago (Bloomberg) -- U.K. Prime Minister Boris Johnson will today warn people to stay vigilant as he prepares to lift virtually all remaining curbs in England. French President Emmanuel Macron will also address the nation today amid a surge in infections. Authorities have toughened social-distancing rules in Bangkok, Seoul, and parts of Vietnam as the fast-spreading delta variant of the coronavirus continues to advance. Tokyo entered its fourth state of emergency and Sydney had a 45% spike in daily cases. The U.S. had the most cases since mid-May as delta hit less-vaccinated parts of the nation. Anthony Fauci, the top U.S. infectious disease specialist, said “ideological rigidity” is stopping people from getting Covid-19 shots.