WHO: Omicron subtype variants BA.4 and BA.5 have invaded more than ten countries around the world

The WHO stated that the Omicron subtype variants BA.4 and BA.5 respectively have spread to more than ten countries around the world.Associated Press


World Health Organization (WHO) said on the 11th that the novel coronavirus was discovered in South Africa last monthomicronVirus subtypes “BA.4” and “BA.5” have spread to more than ten countries and have spread throughout the world.EpidemicBut the prevalence of these highly mutated strains remains low.

According to CNBC, the WHO’s new crown pandemic technical director Maria Van Kerkhove said in a question and answer at the WHO Community Forum that the ba.4 virus has spread to at least 16 countries with nearly 700 cumulative cases, and ba. At least 17 countries now have more than 300 cases.


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Van Kerkhove said that although the two omicron subtypes have a lower risk of serious disease than the original omicron, they appear to be more contagious. She pointed out that the WHO will continue to monitor BA.4 and BA.5 to determine whether these two new viruses will eventually replace BA.2 and become the main circulating virus strains in the world.

BA.4 and BA.5 are mainly rampant in South Africa, and have invaded Europe, the Americas, and a small part of Asia.

As per WHO report, more than 36 BA.4 cases were found in Austria, 24 in UK, 17 in US and Denmark and 17 in Belgium, Israel, Germany, Italy, Canada, France, Netherlands, Australia. Switzerland and Africa. Botswana is reporting single-digit BA.4 cases.

With regard to the BA.5 outbreak, there were approximately 57 cases in Portugal, 52 in Germany and 17 in the United Kingdom; Hong Kong, Australia, the United States, France, Denmark, Austria, Belgium, Israel, Norway had less than 10 cases. , Pakistan, Spain and Switzerland.

The report noted that the number of people infected with BA.4 and BA.5 is currently low, but “the apparent geographic spread (trend) suggests that these mutants have spread successfully”.

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