Stage 3 clinical trials on COVID-19 vaccines could see results before end of the year

Moderna and Pfizer are the first companies to enter Phase 3 clinical testing on a COVID-19 vaccine in the U.S. Each company plans to blind test 30,000 volunteers in hopes of having results and possibly effective vaccines by the end of the year. Meg Oliver reports.

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Source: Health News: CBSNews.com - July 28, 2020 Category: Consumer Health News Source Type: news