Decline in COVID-19 Hospitalization Growth Rates Associated with Statewide Mask Mandates — 10 States, March–October 2020

(MMWR) During March 22–October 17, 2020, 10 sites participating in the COVID-19–Associated Hospitalization Surveillance Network in states with statewide mask mandates reported a decline in weekly COVID-19–associated hospitalization growth rates by up to 5.5 percentage points for adults aged 18–64 years after mandate implementation, compared with growth rates during the 4 weeks preceding implementation of the mandate. Mask-wearing is a component of a multipronged strategy to decrease exposure to and transmission of SARS-CoV-2 and reduce strain on the health care system, with likely direct effects on COVID-19 morbidity and associated mortality.  ...

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. ...

Mutated virus may reinfect people already stricken once with covid-19, sparking debate and concerns The finding, though far from conclusive, has potential implications for how the pandemic will be brought under control, underscoring the critical role of vaccination. Carolyn Y. Johnson, William Wan Washington Post

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AstraZeneca vaccine works against UK coronavirus variant: study The AstraZeneca-Oxford COVID-19 vaccine protects against a more transmissible variant of the virus first identified in the United Kingdom, according to research published Friday. Peter Sullivan TheHill

The AstraZeneca-Oxford COVID-19 vaccine protects against a more transmissible variant of the virus first identified in the United Kingdom, according to research published Friday.