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BA.2 omicron COVID-19 sub-option spreads in New York.

According to New York State health according to the department, BA.2 doubles proportionally every two weeks and is approximately one in 10 sequence cases.

“From February 27 to March 5, 2022, the CDC program for the HHS 2 region (New YorkNew Jersey, Virgin Islands, Puerto Rico). 100% the samples had an omicron variant, compared with 100% in the previous week. During this time, 82.7% the omicron sequences were lines BA.1.1.529 and 17.3% were BA.2 “, – said reported.


Centers for Disease Control and Prevention (CDC) shows trend in similar data for New York and New Jersey.

This occurs when cases of COVID-19 decline in the Big Apple and across the country after the winter surge. The risk of COVID-19 is considered low on most of New York State and the city.

Gatamist reported this city wastewater Observations show an increase in coronavirus readings in recent weeks.

People walk through Times Square during the coronavirus disease pandemic (COVID-19) in the Manhattan area of ​​New York City, New York, USA, November 10, 2021.
(REUTERS / Carla Allegri)

According to one estimate, BA.2 – nicknamed the “stealth” variant – is about 30% more contagious than BA.1.

It was found that the subline has a higher growth rate compared to BA.1, though World Health Organization (WHO) last week it was reported that BA.1.1 remains predominant.

In the weekly updatethe agency said GISAID’s data analysis showed an advantage in BA.2’s growth rate over the BA.1 line, “with an overall average transmission advantage of 56% assuming constant generation time.”

In February statementThe WHO explained that BA.2 differs from BA.1 in its genetic sequence, including some differences in amino acids in adhesion protein and other proteins.


“BA.2 studies have shown that BA.2 has an advantage in growth over BA.1. Research is ongoing to understand the reasons for this growth advantage, but initial evidence suggests that BA.2 is inherently more tolerable than BA. 1, which is currently the most common subline of omicrons.This difference in transmission appears to be much smaller than, for example, the difference between BA.1 and delta.Also, although BA.2 sequences increase proportionally compared to other subunits omicron (BA .1 and BA.1.1), there is still a decrease in the total number of cases in the world “, – it says.

Studies also evaluate the risk of re-infection with BA.2 compared to BA.1.

The WHO stressed that for patients in the United Kingdom there was no difference in the risk of hospitalization from the initial omicron for those infected with BA.2.

In addition, the release noted that actual data on clinical severity from South Africa, the United Kingdom and Denmark show that “there were no reports of a difference in severity” for the options of concern.

Throughout the omicron burst the vaccine is available continued be very effective against hospitalization.


“In terms of early research, we haven’t seen any studies that would claim that it’s more serious, and we haven’t seen studies that suggest that it will evade our vaccines more than Omicron, and, on in fact, our vaccines will work the same way they do with Omicron, ”the CDC director said Dr. Rachel Valensky said in February The White House COVID-19 Response Team Briefing.

However, although omicron variants are milder than delta, a CDC study shows that they are three to five times more deadly than options to delta.

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