"In another promising medical development, the biotechnology company Moderna has announced its COVID-19 vaccine could be up to 94.5% effective. The news comes a week after Pfizer announced its vaccine could be up to 90% effective based on a similar, early analysis from its Phase 3 trial." (https://abcnews.go.com/Health/moderna-announces-initial-phas...)

"And then there were three. U.K. pharmaceutical giant AstraZeneca, along with its partners at Oxford University, became on Monday the third team to announce positive late stage trial results for a COVID-19 vaccine. The "AZD1222" vaccine was "highly effective'' in preventing disease, with up to 90% efficacy in patients receiving one of the dose regimens used in trials, AstraZeneca announced." (https://www.cbsnews.com/news/covid-vaccine-oxford-astrazenca...)

PFIZER: COVID VACCINE OVER 90% EFFECTIVE IN EARLY DATA [video] (https://www.youtube.com/watch?v=CG8U3OWSV4o)

ABC, CBS, NBC.