Boosters

Covid-19 Pandemic Timeline Fast Facts Read CNN's Fast Facts about the coronavirus outbreak, declared a pandemic by the World Health Organization. CNN Editorial Research CNN

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(CNN) Here's a look at the coronavirus outbreak, declared a pandemic by the World Health Organization. The coronavirus, called Covid-19 by WHO, originated in China and is the cousin of the SARS virus.

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EU regulator clears tweaked versions of COVID vaccines LONDON (AP) — The European Medicines Agency has recommended the authorization of two coronavirus vaccines made by Pfizer-BioNTech and Moderna Inc., tweaked to include protection against an early version of the omicron variant. AP NEWS

... the EU drug regulator said the two messenger RNA boosters offered protection both against the original version of COVID-19 and the omicron subvariant BA.1, which has since been overtaken globally by later omicron subvariants BA.4 and BA.5. Nearly 80% of coronavirus cases worldwide are now being caused by omicron BA.5, according to the World Health Organization.

Study explores differences in the efficiency of COVID-19 vaccine boosters In a new study, researchers predicted the efficacy of coronavirus disease 2019 (COVID-19) vaccine boosters. News-Medical.net

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The study findings indicated that variant-modified booster vaccines could result in significantly higher neutralization titers against prevalent and ancestral SARS-CoV-2 variants compared to ancestral-based boosters.