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Pfizer and Moderna vaccines are both safe and have similar effectiveness at preventing COVID-19 illness. Clinical trial data when they were first released in December 2020 showed 95% efficacy for ...
The Moderna news followed preliminary results from the Pfizer-BioNTech vaccine candidate, BNT162b2, with Moderna demonstrating similar efficacy, but requiring storage at the temperature of a standard medical refrigerator of 2–8 °C (36–46 °F) for up to thirty days or −20 °C (−4 °F) for up to four months, whereas the Pfizer-BioNTech ...
The COVID-19 mRNA vaccines from Moderna and Pfizer–BioNTech had short-term efficacy rates of over 90 percent against the original SARS-CoV-2 virus. Prior to mRNA, drug trials on pathogens other than COVID-19 were not effective and had to be abandoned in the early phases of trials. The reason for the efficacy of the new mRNA vaccines is not clear.
mRNA-1283 is a COVID-19 vaccine candidate developed by Moderna. [ 2 ] [ 3 ] Compared to prior mRNA vaccines, this candidate has a storage temperature of 2-5 °C, compatible with vaccine storage in a standard refrigerator, rather than low temperature freezers. [ 4 ]
Moderna’s unnamed version of the vaccine for children 6 months to 11 years has been authorized for emergency use. Single pediatric doses contain 25 μg of mRNA.
Yahoo News spoke recently to Dr. Lucy McBride, who specializes in internal medicine, to break down what Americans need to know about boosters and the new mix and match approach.
Vaccine efficacy is the reduction in risk of getting the disease by vaccinated participants in a controlled trial compared with the risk of getting the disease by unvaccinated participants. [346] An efficacy of 0% means that the vaccine does not work (identical to placebo).
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