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WHO warns 3 Omicron variants ‘spread faster, affect lungs’

The Center for Genomics Medicine (CMG) of Ramathibodi Hospital (Thailand) said that the World Health Organization (WHO) had issued a warning about the emergence of 3 sublinear variants of Omicron with a risk of rapid infection. and affect the lungs.

Accordingly, sub-variants BA.4, BA.5 and BA.2.12.1 may be more infectious than the original Omicron variant. According to CMG, in recent weeks, WHO and many scientists around the world have been monitoring developments related to these three sub-variants in South Africa and the US.

Last month, South African scientists identified two sublines BA.4 and BA.5 in the country and conducted experiments, drawing the conclusion that people who have been infected with the Omicron variant can still get the disease again. COVID-19 caused by infection with subtypes BA.4 and BA.5.

According to medical experts, the change in the genetic mutation of the virus is the cause of the accelerated spread of the virus, noting that the virus can enter the cells of the lungs, causing a similar infection. self-variant Delta.

Meanwhile, some other scientific reports have suggested that these sub-variants can even evade the effects of vaccines.

Due to the high infection rate, the Omicron variant has many conditions to mutate, leading to the emergence of a series of sub-lineages or sub-variants, of which BA.4 and BA.5 are two out of five Omicron sub-lineages. determined by science.

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