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Several sources, including the World Health Organisation, have expressed concern about the increase in Covid-19 infections in China and parts of Europe over the past two weeks, attributing it to a "stealth Omicron" variant of the coronavirus.
Not all countries are impacted equally by the BA.2 subvariant. That tells us a lot about what works and what doesn’t
People infected with the highly contagious Omicron variant of Covid are less likely to contract BA.2 subvariant, according to a study.Omicron, which has rapidly spread worldwide, carries numerous mutations in key regions and is associated with increased transmissibility and immune escape. 📰 After Omicron Variant of COVID-19, Risk of BA.2 Subvariant Is Rare, Says Study.
Omicron: ‘We are not seeing a difference in severity of BA.1 compared to BA.2,’ Maria Van Kerkhove, a senior WHO official, said
Getting infected twice with two different Omicron Covid-19 subvariants is possible, but rarely happens, a Danish study has found.