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The UK Health and Safety Agency (UKHSA) has confirmed that a recombinant variant of the Omicron sub-strain binding, currently named XE, has been found in the UK
.
The cunning virus begins to "transform" like a chameleon again.
The new strain XE spreads 10% faster thanBA.
2
2
Recently, 637 confirmed cases of the new Covid variant "XE" were found in the UK, which virus transmission scientists say combines two strains of Omicron, a hybrid of BA.
1 and BA.
2
.
Professor Susan Hopkins, UKHSA chief medical adviser, said recombinant variants were not uncommon when there were multiple variants in a pandemic
Like other kinds of variants, most die out relatively quickly
Growth rates are a measure of how quickly infections are diagnosed
.
The infection growth rate of BA.
Figure 1 Sampling frequency of XE relative to BA.
2 (UKHSA Technical briefing 39)
● Be wary of new mixed strains: XE, XD
Be wary of new mixed strains: XE, XD In early March, Israel found two confirmed cases of the XE strain
.
The World Health Organization (WHO) has warned European countries not to underestimate the danger posed by mixed strains, The Hindustan Times reported
UKHSA's latest technical brief illustrates three current recombinant strains, two different combinations of Delta and BA.
1 are XD and XF , and the third is a sub-variant XE
of BA.
2 .
XD and XF XE XD may be more worrying
Figure 2 Tom Peacock's comments on the new strain (Source: Twitter)
● Omicron variant BA.
2 is currently the mainstream of global communication
2 is currently the mainstream of global communication
The World Health Organization reports that the highly contagious Omicron sub-variant BA.
2 is accelerating the ongoing surge in coronavirus cases in Europe, the Americas, and now dominates global Covid-19 transmission (Figure 3)
.
Figure 3 Variant prevalence among currently sequenced cases in England (Source: UKHSA Technical briefing 39)
WHO reports of cases worldwide between 16 February and 17 March show that BA.
2 accounted for approximately 86% of global infections, with the previously dominant sub-variants BA.
1 and BA.
1.
1 combined accounting for approximately 86%.
13% of cases
.
BA.
Dr.
Rochelle Valensky, director of the U.
S.
Centers for Disease Control and Prevention, said at a White House briefing Wednesday that roughly one-third of coronavirus cases in the U.
S.
are BA.
2
.
U.
Dr Van Kerkhove said that over the past two years, as the virus continued to evolve, countries responded to the emerging outbreaks with public health measures such as virus surveillance, testing and sequencing
.
A top official in the WHO's European region said cases had surged in the region because authorities eased pandemic restrictions too quickly
Cases surge in the region as authorities ease pandemic restrictions too quickly
There is currently no conclusive evidence that XE is more severe in terms of symptoms
.
Booster vaccines remain the best way to protect against various variants of Omicron, and UKHSA is encouraging weaker members of society to receive a second booster dose this spring
.
