What scientists know about the new variants and the Covid-19 vaccines When it comes to the new variants and the Covid-19 vaccines, some of the news is very good. But some is potentially very bad indeed. Andrew Joseph STAT

here is now real evidence that at least one coronavirus variant seems to elude some of the power of Covid-19 vaccines. What, exactly, that means for the pandemic is still being sussed out.

Vaccines Could Blunt U.K. Epidemic in Weeks

LONDON — Britain is on a pace to give the first shot of a two-dose coronavirus vaccine to its entire population by the end of June, if it can avoid supply and logistical issues that threaten to slow one of the world’s fastest rollouts.

The most vulnerable will get their first doses much sooner — likely over the next two weeks — which could drastically reduce deaths. People over 70, nursing home residents and workers, health and social workers, and those whose health problems make them extremely vulnerable are all on schedule to receive their first vaccine shots before Feb. 15. Together these groups have accounted for 88 percent of all Covid-19 deaths.

The timeline shows the promise of vaccination as a path out of the deadliest stage of the pandemic in the countries that are moving quickly. ...