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Omicron Sub-variant BA.2.12.1

Recently, South Korea reported that there were 5 new cases of BA.2.12.1 infections among American travelers. Given its rapid spread in other countries, the disease control authorities in South Korea called the new mutation “the most worrisome variant of COVID-19”.

According to data from American Centers for Disease Control and Prevention(CDC), BA.2.12.1, which is believed to be about 30% more transmissible than BA.2, is poised to remain the dominant strain circulating in the U.S.. Statistics show that BA.2.12.1 has beat its sister sub-variant BA.2 and accounted for 42.6% of new coronavirus cases.

A team from Peking University once published a paper on bioRxiv website, exploring the ability of BA.2.12.1, BA.4 and BA.5 to escape from antibodies elicited by Omicron infection. The paper says the transmissible advantages of BA.2.12.1 compared with other BA.2 sub-variants are immune escape function, specifically escape from neutralizing antibody caused by prior infection, which forms the basic reason that BA.2.12.1 has more propagation advantages than other sub-variants.

In the face of repeated outbreaks, the continuous development of Omicron poses a huge challenge to SARS-CoV-2 herd immunity. As individuals in society, wearing masks and maintaining social distance are also things within our power, and we hope that the epidemic can end as soon as possible.


Post time: May-30-2022
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