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Vaccine and Previous Infections Offers Protection Against Omicron

The findings of a recent study suggest that people previously infected with Covid-19 and those vaccinated will have some ‘stronger than basic’ defense against the Omicron strain of coronavirus. The research was published in the ‘Emerging Microbes & Infection Journal’.

The test tube samples of examined in this new research did not show that it “exceeds” all other variants in its potential capability to evade the protection gained from previous infection or vaccination. The findings also suggested that although a third-dose enhancement strategy can “significantly boost immunity,” the protection from Omicron “may be compromised” – but more research is needed to better understand this.

The lead author Youchun Wang, Senior Research Fellow from the National Institutes for Food and Drug Control in China, said that their results supported recent findings in South Africa which highlighted Omicron was easy to evade immunity. They found alarge number of mutations of thevariant did cause significant changes of neutralization sensitivity against people who had already had Covid.

Wang also added that the average ED50 (protection level) against Omicron is still higher than the baseline, which indicated there is still some protection effect can be observed. Wang, who is Former Chairman of the Medical Virology and Vice Chairman of the Medical Microbiology and Immunology of the Chinese Medical Association, did add caution though. He said that because the antibody protection – in the form of previous infection or vaccination – decreased gradually over a period of six months, Omicron may be able to escape immunity even better.

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