Britain's new strain of coronavirus.
"British Prime Minister Boris Johnson announced on Saturday that the new strain had led to spiraling infection numbers. His government tightened its COVID-19 restrictions for London and nearby areas, and also reversed plans to ease restrictions over the Christmas period." According to news by Reuters.
Study: New Mutation Sped Up Spread of Coronavirus
in an article below by Brenda Goodman MA, web MD.
"Nov. 13, 2020 -- The virus that causes COVID-19 is not the same strain as what first emerged from China. A new study shows it has changed slightly in a way that makes it more contagious to humans.
Compared to the original strain, people infected with the new strain -- called 614G -- have higher viral loads in their nose and throat, though they don’t seem to get any sicker. But they are much more contagious to others."