Every time H5N1 infects a mammal, it has a chance to develop mutations that make it more transmissibleAlamy Stock Photo It’s been detected in birds on every continent except Australia,…
Covid-19 variant XEC may spread more easily than previous variantsJarun Ontakrai/Shutterstock A new covid-19 variant called XEC has started to spread worldwide, primarily in Europe. Early evidence indicates that it…
New Delhi, India, in March 2020, during a curfew imposed as a preventive measure against covid-19Yawar Nazir/Getty Images The covid-19 pandemic may have impacted India more severely than previously estimated,…
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