Vaccination

Brazil turns the tide with Covid-19 vaccines

Despite a slow start plagued by much controversy that still haunts President Jair Bolsonaro, Brazil's coronavirus vaccination campaign is now one of the fastest-paced and farthest-reaching in the world.

Immunology

Estimated population immunity against SARS-CoV-2 62.0 percent

(HealthDay)—In the United States, population immunity against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection was estimated at 62.0 percent as of July 15, 2021, according to a study published online ...

Diseases, Conditions, Syndromes

New Caledonia locks down again over COVID cases

New Caledonia will impose a new coronavirus lockdown starting Tuesday after three new cases were confirmed in the South Pacific French territory that had been declared "COVID free," officials said.

Diseases, Conditions, Syndromes

Largest study of its kind finds face masks reduce COVID-19

Wearing face masks, particularly surgical masks, is truly effective in reducing the spread of COVID-19 in community settings, finds a new study led by researchers from Yale University, Stanford Medical School, the University ...

Diseases, Conditions, Syndromes

Evaluating the risk of COVID-19 transmission in schools

Having good safety measures at schools is very important as children start going back to the classroom. But which measures are most effective at optimizing health and safety conditions and preventing the spread of COVID-19 ...

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