USA: Omicron Infection Induces Limited Immune Response in the Unvaccinated, yet COVID-19 Hospital Deaths Are Up

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April 18. The following is a summary of some recent studies on COVID-19. They include research that warrants further study to corroborate the findings and that has yet to be certified by peer review.

Omicron infection induces limited immune response.

Unvaccinated people infected with the Omicron variant are unlikely to develop immune responses that will protect them against other variants of the coronavirus, a new study suggests.

Unlike antibodies induced by COVID-19 vaccines or infections with earlier SARS-CoV-2 variants, antibodies induced by the Omicron BA.1 and BA.2 variants do not neutralize other versions of the virus, researchers found when they analyzed blood samples obtained after Omicron infection. People with Omicron “breakthrough” infections after three doses of the mRNA vaccines designed to neutralize earlier versions of the virus had high levels of neutralizing antibodies against the two Omicron variants, although the efficiency was lower than against previous SARS-CoV-2 versions, according to a report undergoing peer review at Nature Portfolio and posted on Research Square.

Source: Reuters

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114840cookie-checkUSA: Omicron Infection Induces Limited Immune Response in the Unvaccinated, yet COVID-19 Hospital Deaths Are Up