Australia has discovered an “invisible” version of Omicron. different

A human case of Omicron sub-variant human infection from South Africa has been detected in Australia. This variant cannot be detected by conventional PCR.

Bloomberg quoted Australian health officials as saying on December 8 that a case of subvariant Omicron bacterial infection has been found in the country. This person is from South Africa and tested positive for SARS-CoV-2. coronavirus. -2 December 4 in Queensland.

State health official Peter Aitken stated that the new variant carried half of the mutations in the Omicron mutant protein (about 14 mutations), but they were not sure at the time whether this had any effect. That or not. This point or not. Affect the severity of the virus and whether it will reduce the effectiveness of the vaccine.

“We now have cases of Omicron variants and Omicron variants,” Aitken said.

The above information was released after the Guardian reported on December 7 that scientists had detected an “invisible” version of the Omicron variant in test samples in South Africa, Australia, and Canada, but it may be changed without detection. Spread widely. The “stealth” version has many of the same mutations as Omicron, but does not allow PCR to detect specific genetic changes in the virus, although it can still be detected by genetic sequencing.

Professor François Baruches, director of the Institute of Genetics at Imperial College London, said that about 6% of the genetic samples submitted to the Gisaid database are a new version of Omicron, called BA.2. “Omicron has two subclasses, BA.1 and BA.2, and they are genetically different,” Balloux said. These two sub-branches may have different mechanisms of action.

The news comes as Queensland is preparing to reopen next week, when approximately 80% of the population has been fully vaccinated.

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