The World Health Organization declared the new coronavirus variant "Mu" as a "variant of interest."
Faced with limited Covid-19 vaccine supplies, many countries chose to delay the administration of the second doses. Here’s the science behind the delay and timing of the jabs.
Outbreaks in several countries are raising questions over the effectiveness of Sinovac and Sinopharm vaccines against more infectious Covid-19 variants.
British Health Secretary Matt Hancock confirms two people infected with the new variant are “contacts of cases who travelled” from South Africa. South African scientists believe the variant is more infectious and could hit younger people harder.
A WHO team attempts to solve the mystery of where SARS-CoV-2 came from and how it jumped onto humans.
The global coronavirus pandemic has infected more than 76 million people around the world and claimed more than 1.6 million lives. Here are updates for December 20:
A childhood vaccine may help prevent severe Covid-19 infections, while cigarette smoke increases the risk of contracting the virus, according to the latest study.
A study published in The Lancet Infectious Diseases journal confirms first reinfection case in the US after a 25-year-old Nevada man was found to have been infected with two distinct variants of SARS-CoV-2, within a 48-day time frame.
The World Health Organization on Tuesday acknowledged the risk after a group of scientists urged the global body to update its guidance on how the respiratory disease passes between people.
What does Covid-19’s latest mutation mean, and what exactly is behind the raging debate over airborne transmission that has the WHO under fire.
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