The work is based on an analysis of 35,670 re-infections identified in nearly 2.8 million people tested positive in South Africa.
According to a study by South African scientists, the risk of recurrence of Kovid-19 increases with the Omigran variant, giving the first indication that this variant is more capable of avoiding infection-acquired immunity than previous variants. The work is based on an analysis of 35,670 re-infections identified in nearly 2.8 million people tested positive in South Africa.
Between 1There is On November 27, the risk of re-infection was three times higher compared to waves associated with beta and delta variations. The study concludes on Thursday, December 2, that “the Omicron variant is associated with a significant ability to protect the immune system from previous infections.” medRxiv, But it has not yet been reviewed by colleagues.
“We have no data on the vaccine status of individuals in our data, so we can not make any conclusions about Omicron’s ability to avoid vaccine – induced immunity,” Juliette Bulliam of Stellenbosch University in South Africa warned on Twitter. Study.
Last week, South Africa announced the discovery of this new variant, which created the phenomenon of global panic. Because it has so many mutations, scientists have tried to understand whether it can be highly contagious or resistant to vaccines or immunity acquired due to a previous infection. Laboratory results are still awaited, so this study provides valuable first information.
Less severe symptoms
“We hope that the previous infection will not protect us from Omigran,” said Anne von Godberg, an epidemiologist with the South African National Infectious Diseases (NICD). According to first observations, already infected people may be re-contaminated by Omicron, often with less severe symptoms, the scientist noted.
However, vaccines should be effective against severe forms of the disease, he said. The current variation is found in at least 22 countries, according to the WHO, in four African countries: Ghana, Nigeria, Botswana and South Africa. The number of official Govt-19 cases in South Africa has increased by 54% in the last seven days over the past seven days, which is expected to cross 10,000 cases in the next 24 hours due to the rapid increase in pollution in South Africa. According to WHO Africa.
At this point, WHO expert Ambrose Talisuna pointed out that “we do not know where the variation is coming from.” Following the discovery of a new variant named Omicron, South Africa and its neighbors have been fined for sudden travel bans in several countries. The WHO has reiterated its call for the removal of these “unreasonable” restrictions, for which there is no scientific justification.