The United States is unlikely to face a “true” fourth wave of COVID-19 outbreaks, but the country will have to wait a few weeks longer before...
Countries are competing to vaccinate adults against Covid-19 and move towards a more normal future. The shot must eventually reach the arms of children and teenagers...
Washington — The rapidly prevalent Covid-19 strain, first identified in the United Kingdom as B.1.1.7, can now account for 25% to 30% of US cases, US...
Johannesburg — Earlier this year, doctors and epidemiologists in South Africa’s economic capital were preparing for the worst. A surge of new coronavirus strains across the...
Sao Paulo — as aggressive Coronavirus strain from Amazon Preliminary research into the devastation of Brazil provided first evidence that China’s CoronaVac, the country’s main vaccine,...
Covid-19 survivors who receive the first dose of the Covid-19 vaccine may cause an immune response that may eliminate the need for a second dose, releasing...
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