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On 23 December 2020, researchers in Brazil said the vaccine was more than 50% effective, but withheld full results at Sinovac's request, raising questions about transparency as it was the third delay in releasing results from the trials. [212]
CoronaVac is an inactivated virus COVID-19 vaccine developed by Sinovac. [7] It has been in Phase III clinical trials in Brazil, [8] Chile, [9] Indonesia, [10] Philippines, [11] and Turkey. [12] It relies on traditional technology similar to the Sinopharm BIBP vaccine and Covaxin, otherwise known as inactivated-virus COVID-19 vaccines in Phase ...
The vaccine may have characteristics favorable for vaccinating people in the developing world. While mRNA vaccines, such as the Pfizer–BioNTech COVID-19 vaccine and Moderna COVID-19 vaccine showed higher efficacy of +90%, mRNA vaccines present distribution challenges for some nations, as some may require deep-freeze facilities and trucks.
Indonesia gave Sinovac Biotech's COVID-19 vaccine its first emergency use approval outside China on Monday as the world's fourth most populous country launches nationwide inoculations to stem ...
They further calculated that the vaccine was 49% effective at protecting against symptoms from the JN.1 variant, which now causes a majority of infections in the U.S.—even though the shot was ...
In 2021 Nature reported that "studies have questioned the length of protection" that domestic vaccines such as CoronaVac and Sinopharm offer, especially when compared to mRNA vaccines. [19] A 2022 meta-analysis found about 65% vaccine effectiveness against infection for CoronoVac, compared with about 90% for Pfizer and 98% for Moderna. [20]
Thailand Food and DrugAdministration (FDA) on Monday gave emergency use authorisationfor the COVID-19 vaccine of Sinovac Biotech, paving theway for the country's first coronavirus inoculations.
How COVID‑19 vaccines work. The video shows the process of vaccination, from injection with RNA or viral vector vaccines, to uptake and translation, and on to immune system stimulation and effect. Part of a series on the COVID-19 pandemic Scientifically accurate atomic model of the external structure of SARS-CoV-2. Each "ball" is an atom. COVID-19 (disease) SARS-CoV-2 (virus) Cases Deaths ...