The new sub-strain of the Omicron variant of Coronavirus, which has spread rapidly throughout the world, has emerged as the latest challenge in taming Covid-19. Sub-strain BA.2 has been detected in at least 57 countries, according to the World Health Organization (WHO). A prominent health expert has said that people need to be careful about it.
“We must be careful and monitor new information when we get out, but we don’t need to worry,” Dr. Leana Wen, a Professor of Health and Management Policy at George Washington University Milken Institute School of Health, told CNN He further said that BA.2 has replaced a very contagious original Omicron variant, known as BA.1, in several places at the same time, Dr. Wen said that Omicron would not be the last variant of Coronavirus “Almost no. The new variant has sprung up all the time, because that is what viruses do: they mutate when they replicate,” he said, added: “This is why real time supervision is very important, and also why vaccination is the key.”
How contagious ba.2?
In accordance with the data available from various governments, especially in Europe the worst, Sub-strain BA.2 has obtained land in recent months. In Denmark, for example, people who were infected with BA.2 spread the virus to an average of 39% of vulnerable household members, versus 29% for the original Omicron variant. It is in line with the UK data preliminary However, health experts say that Omicron has not turned off as Delta.
But is BA.2 more dangerous than the previous strain?
Not really, according to whom. Based on evidence from Denmark, WHO said this week that BA.2 seemed no more severe than the original omicron variant and the spread did not cause unexpected nails in hospitalization.
The recent change announced by the government in Denmark reflects the same thing, when the limitation of Covid-19 ends. The Danish government said that this disease no longer pose a threat to the community, even when the case reached the highest record.
Is vaccine effective against BA.2 sub-variants? The latest data from Europe shows that the existing vaccine is equally effective against BA.2 as against the previous sub-variants. Even though BA.2 was more contagious, the vaccine blocked 13 percent of the 25 weeks case after the second dose, a study in the UK showed The amount increased to 70 percent two weeks after the booster dose The difference between BA.2 and BA The researchers say that BA.2 has 40 different mutations from the original sub-strain, including key changes in the spike area.
While both are related, there is enough difference to encourage behavior change. The lightest form of most cases of omicrons in vaccinated people can make those who recover are still susceptible to existing viruses and future variants, according to researchers They then said BA.2 will extend the Covid-19 wave led by Omicron. Decline that has the potential to be slower in cases can cause higher hospitalization and cause problems for countries with lower vaccination rates Trevor Bedford, a computational biologist who works at the Fred Hutchinson Cancer Research Center, said it would “make a longer omicron circulation tail”.
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