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One-third of people with COVID-19 in the US are caused by Omicron’s BA.2 subtype

Despite the increase in the number of cases sub-strain BA.2 belong to Omicron variant extremely contagious at Americahealth experts in this country said, a new large wave of infections here seems unlikely.

COVID-19 cases in the US have fallen sharply since January 2022, although a resurgence in outbreaks in parts of Asia and Europe has raised fears that a new outbreak will follow. in the US with similar patterns as during the two years of the pandemic in the country.

In the US Northeast, which includes the states of New Jersey, New York and Massachusetts, the BA.2 subvariant now accounts for more than half of all COVID-19 cases, according to data from the Centers for Disease Control and Prevention. disease (CDC) USA.

1/3 of people with COVID-19 in the US are caused by Omicron's BA.2 sub-strain - Photo 1.

People wear masks in Los Angeles, California, USA on February 8, 2022. (Photo: Reuters)

BA.2 accounted for 35% of infections in the US for the week ending March 19. This is up from 22.3% in the week ended March 12.

Anthony Fauci, America’s top infectious disease official, said in the Washington Post on March 22 that he does not believe there will be a spike (the number of COVID-19 cases) anytime soon, ” unless something changes dramatically”.

According to the World Health Organization (WHO), the BA.2 subtype is more transmissible than the Omicron variant BA.1 that caused the outbreak in the winter of 2021. However, BA.2 does not appear to be. cause more severe disease, and initial data suggest that infection with BA.1 provides strong protection against COVID-19 reinfection with BA.2.

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