CDC raises COVID-19 warning for UK to highest level, urges Americans to avoid travel

The U.S. Centers for Disease Control and Prevention on Monday raised its coronavirus warning for the United Kingdom to Level 4, the highest on the agency’s scale, and urged Americans not to go there even if fully vaccinated. The advisory comes as the U.K. faces an alarming surge in new COVID-19 infections, largely driven by the highly contagious delta variant, while the government simultaneously lifted nearly all remaining restrictions on public and indoor gatherings. “Because of the current situation in the United Kingdom, even fully vaccinated travelers may be at risk for getting and spreadi...