Even though the cases of infection with the Omicron variant of the corona are decreasing in all countries of the world including India, although scientists are advising to take special precautions regarding the increasing risk of its sub-variant. Several studies have claimed that Omicron’s sub-variant BA.2, may be several times more infectious than the parent variant, and that it also puts people at risk of serious disease due to infection. In view of this crisis, epidemiologists have appealed to upgrade it to ‘Variants of Concern’.
The UK Health Services Agency (UKHSA) said in a recent report on the threat of Omicron ba.2 that it is far more contagious than the ba.1 strain, not only that it can also dodge traditional corona testing. In another study, scientists have claimed that several such signals have been observed in this sub-variant, which enable it to cause serious disease. It is feared that infection caused by this strain can cause serious disease like Delta. Let us know why Omicron’s sub-variant BA.2 is being considered so dangerous?
Health organizations are concerned about BA.2
Earlier this week, the World Health Organization (WHO) raised concerns that the ba.2 strain was growing faster than Omicron’s original variant. Due to this the situation has worsened in many countries. Dr Rochelle Valensky, director of the US Centers for Disease Control and Prevention, said in a statement that there is no evidence to suggest that the BA.2 strain is more severe than the previous BA.1, however. This is being closely monitored.
A new crisis may emergeEpidemiologist Eric Fang says, sub-variant BA.2 is emerging as a new problem. Its infection rate can be high. People who have previously been infected with BA.1 may have immunity to this new sub-variant, although it is not clear how effective this would be. Fang also said that studies have shown that BA.2 may also have two variants. There is a need to be on special alert regarding this new threat of Corona.
Can dodge the body’s immunity
Recent studies on the Omicron sub-variant ba.2 have been shown to be a cause of concern in several cases. According to scientists from the UK Health Services Agency (UKHSA), Omicron ba.2 does not contain a mutation that helps detect COVID-19. A genetic deletion was observed in Omicron’s “S” spike gene that would have made it easier to confirm infection with RT-PCR testing, although the ba.2 sub-variant does not have that S gene, because It can be difficult to track. In such a situation, there is a apprehension that despite people having an infection, their test report may come negative.
Could another wave come?In view of the increasing threat of sub-variant BA.2, another fear is being created in the minds of people whether it may lead to another wave of corona? In this regard, health experts say that the reports coming from all over the world are definitely worrying, but it can cause another wave, the possibility of this is less at present. Dr. Rajeev Jayadevan, co-chair of the IMA COVID Task Force, says people who have been infected with Omicron have a lower risk of infection with BA. It is not a new virus or strain, it is a sub-lineage of ba.2 Omicron. It will become the cause of fourth wave in the country, it is not expected at the moment.
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