The emergence of immune-escape variants of severe acute respiratory syndrome coronavirus 2 warrants the use of sequence-adapted vaccines to provide protection against coronavirus disease 2019. A total ...

“At present there are a number of Omicron sub-lineages we’re following closely, including BA.2, BA.4 and BA.5 and another recombinant detected, made up of BA.1 and BA.2,” said WHO Director-General ...

In a recent study published in the journal Eurosurveillance, researchers investigated whether prior severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and/or coronavirus disease ...

The COVID Omicron sub-variant BA.2, informally dubbed the "Stealth Omicron" variant, is able to reinfect people who have already had Omicron, a new study suggests. BA.2 has been under close ...

The evolution of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the pathogen responsible for the coronavirus disease 2019 (COVID-19) pandemic, remains a focus of researchers ...

Scientists studied the sensitivity of Omicron BA.1 and BA.2 to nine monoclonal antibodies, some of which are used in pre-exposure prophylaxis in immunocompromised individuals. The scientists showed a ...