The Delta Variant Is the Symptom of a Bigger Threat: Vaccine Refusal

Of the 39 percent of adults who are unvaccinated, about half say they are completely unwilling. But even within that group, some say they would comply if required to do so.Understand the State of Vaccine Mandates in the U.S.Some are...

They Waited, They Worried, They Stalled. This Week, They Got the Shot.

CHICAGO — They acknowledged that they could have showed up months ago. Many were satisfied that they were finally doing the right thing. A few grumbled that they had little choice.On a single day this past week, more than half...

Should People Who Took The Covid-19 Vaccine Start Wearing Masks Again?

As the Delta variant spreads among the unvaccinated, many fully vaccinated people are also beginning to worry. Is it time to mask up again?While there’s no one-size-fits-all answer to the question, most experts agree that masks remain a wise precaution...

Olympics Virus Cases Raise Tricky Questions About Testing

Moreover, questions about transmission remain unsettled. Vaccinated people with asymptomatic or breakthrough infections may still be able to pass the virus on to others, but it is not yet clear how often that happens.Until that science is more definitive, or...

How Covid-19 Has Upended Life in Undervaccinated Arkansas

MOUNTAIN HOME, Ark. — When the boat factory in this leafy Ozark Mountains city offered free coronavirus vaccinations this spring, Susan Johnson, 62, a receptionist there, declined the offer, figuring she was protected as long as she never left her...

C.D.C. Director Warns of a ‘Pandemic of the Unvaccinated’

As the highly contagious Delta variant of the coronavirus fuels outbreaks in the United States, the director of the Centers for Disease Control and Prevention warned on Friday that “this is becoming a pandemic of the unvaccinated.”Cases, hospitalizations and deaths...

Study Details How Delta Variant Dodges Immune System

The Delta variant of the coronavirus can evade antibodies that target certain parts of the virus, according to a new study published on Thursday in Nature. The findings provide an explanation for diminished effectiveness of the vaccines against Delta, compared...

The C.D.C. Issues New School Guidance, With Emphasis on Full Reopening

Others, including some who have been highly critical of the C.D.C.’s past school guidance, praised the new guidelines.“For the first time, I really think they hit it on the nose,” said Dr. Benjamin Linas, an infectious disease specialist at Boston...

Citing the Delta Variant, Pfizer Will Pursue Booster Shots and a New Vaccine

Pfizer and BioNTech announced on Thursday that they were developing a version of the coronavirus vaccine that targets Delta, a highly contagious variant that has spread to nearly 100 countries. The companies expect to begin clinical trials of the vaccine...

The Real Toll From Prison Covid Cases May Be Higher Than Reported

Public health officials say the prospect of overlooked virus deaths tied to the nation’s prisons, jails and immigration detention centers carries particular risks. It is challenging, the experts say, to prepare prisons for future epidemics without knowing the full toll....
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