Let us introduce you to the Omicron subvariant BA.1's sister, BA.2. 🤔 engineering
Rather than a daughter of the Omicron variant BA.1 , it’s more helpful to think of BA.2 as Omicron’s sister.Viruses, and particularly RNA viruses such as SARS-CoV-2, make lots of mistakes when they reproduce. They can’t correct these mistakes, so they have a relatively high rate of errors, or mutations, and are constantly evolving.
The World Health Organization classified Omicron a variant of concern on November 26 because of its potential to cause higher reinfection rates, increased transmissibility, and reduced vaccine protection.A lineage, or sub-variant, is a genetically closely related group of virus variants derived from a common ancestor.labeled BA.2
But it doesn’t mean we can’t diagnose BA.2 with PCR tests. It just means when someone tests positive for SARS-CoV-2, it will take us a little longer to know which variant is responsible, through genome sequencing. This was the case with previous variants.Perhaps most concerning is emerging evidence BA.2 may be more infectious than the original Omicron, BA.1., where BA.2 has largely replaced BA.1, suggests BA.
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