Search results
Sep 16, 2024 · Approval, authorization and safety. Pfizer-BioNTech COVID-19 vaccine 2024-2025 formula is authorized for people ages 6 months through 11 years. Comirnaty is approved for people age 12 and older. The vaccines that help protect against COVID-19 are safe and effective based on clinical trials and continued monitoring.
Mar 28, 2022 · A 2021 study of the Sinovac vaccine, called CoronaVac, found that vaccine was only 46.8 percent effective against symptomatic SARS-CoV-2 infection after the second vaccine dose.
Aug 22, 2021 · Learn the differences between the AstraZeneca vs. Pfizer vaccines, including how they work, how many doses are needed, and how effective they are over time.
Sep 3, 2024 · First introduced in December 2020, the original COVID mRNA vaccines from both Pfizer and Moderna protected against the original SARS-CoV-2 virus. They have been replaced three times since then with shots targeting different iterations of the Omicron strain of the virus.
The Sinovac vaccine is a vaccine that uses an inactivated form of the COVID-19 virus, instead of the mRNA technology that Pfizer and Moderna use. Developed by Chinese biopharmaceutical company Sinovac Biotech, this vaccine has been approved for use and widely used in countries like China, Indonesia and other South American countries.
Jun 10, 2022 · The benefits of booster vaccination are recognized following increasing evidence of waning vaccine effectiveness against mild and asymptomatic SARS-CoV-2 infection over time. Either heterologous (a different vaccine product to Sinovac) or homologous (a booster dose of Sinovac) doses can be used.
Aug 16, 2021 · Collectively, there are subtle differences between the two vaccines, both with respect to the RNA and the LNP carriers, and a higher amount of RNA per dose is used in the Moderna vaccine (100 µg...
