Chicago: Omicron variants that greatly transplant from the SARS-COV-2 virus – the most common form known as BA.1 – now contributed almost all Koronavirus infections globally, despite a dramatic surge in Covid cases peaking several countries.
Scientists now trace the increase in cases caused by close cousins ​​known as BA.2, which began to exceed BA.1 in several parts of Europe and Asia.
The following is what we know so far about the new subvariance: “Stealth” subvariantglobally, BA.1 contributed 98.8% of sorted cases submitted to the GISAID public virus tracking database on January 25.
But some countries report a recent increase in subvarians known as BA.2, according to the World Health Organization.
Read Alsoba.2 ‘Stealth’ Variant Forming 80% Omicron Infection Kolkateatatnear 80% Positive Covid samples sent for sequencing genome by the laboratory in the city have been found containing BA.2 sub-genealogy from the omicron variant, nicknamed ‘version of Stealth’, because it can’t Taken in RT-PCR tests and require genom-seadencing.
Apart from BA.1 and BA.2, which includes two other subvarians under Umbrella Omicron: BA.1.1.
529 and BA.3.
All are closely related genetically, but each transfer feature that can change the way they behave.
Trevor Bedford, a virology computing at the Fred Hutchinson Cancer Center who has tracked the evolution of the SARS-COV-2, wrote on Twitter on Friday that BA2 represents around 82% of cases in Denmark, 9% in the UK and 8% in the United States, based on the analysis Regarding the order of data from the GISAID database and the number of cases from our world in a data project at the University of Oxford.
The Omicron version is somewhat easier to track than the previous variant.
That’s because BA.1 There is no one of the three target genes used in general PCR tests.
The case that shows this pattern is assumed by default caused by BA.1.
BA.2, sometimes known as “stealth” subvarians, does not have the same lost target gene.
Conversely, scientists monitor the same way they have a previous variant, including Delta, by tracking the number of virus genomes submitted to the public database such as GISAID.
Like other variants, BA infection can be detected by the Coronavirus home test kit, even though they cannot show which variants are responsible, experts say.
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