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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]
Influenza Vaccine. Vaccine efficacy or vaccine effectiveness is the percentage reduction of disease cases in a vaccinated group of people compared to an unvaccinated group.For example, a vaccine efficacy or effectiveness of 80% indicates an 80% decrease in the number of disease cases among a group of vaccinated people compared to a group in which nobody was vaccinated.
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 ...
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 ...
[353] [354] [355] Aiming for a realistic population vaccination coverage rate of 75%, and depending on the actual basic reproduction number, the necessary effectiveness of a COVID-19 vaccine is expected to need to be at least 70% to prevent an epidemic and at least 80% to extinguish it without further measures, such as social distancing. [356]
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.
The vaccines appear to remain effective against severe illness or hospitalization from COVID-19 for most people. CDC reports decline in vaccine effectiveness, prompting booster decision Skip to ...
Plans to secure 36 million doses from China's Sinovac have also been subjected to scrutiny in Congress due to its reported efficacy rate. The efficacy rate of the Sinovac vaccine has varied by country; Turkey has reported an efficacy rate of 91% [119] while Brazil has reported an efficacy rate of 78%. [120]