Scientists at the Africa Health Research Institute in Durban claim that having had an Omicron infection may help bolster immunity against Covid-19’s Delta variant
both previously vaccinated and unvaccinated subjects who were infected with Omicron in South Africa, soon after they started showing symptoms of the coronavirus. They then measured their ability to neutralise both Omicron and Delta variants “at enrollment versus a median of 14 days after enrollment.”
The researchers also emphasise the finding that there was “an enhancement of Delta virus neutralisation”, which increased 4.4-fold. The study, called “Omicron infection enhances neutralising immunity against Delta”, has not appeared in a scientific journal yet, but it was posted to Africa Health Institute’s website on Monday. It has been submitted as a preprint toEnhancement of Delta neutralisation by Omicron infection. Omicron or Delta virus neutralisation by blood plasma from n=13 participants infected in the Omicron infection wave at enrollment and at follow-up .
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