View Moderna Covid Vaccine Trial Protocol Pics. Moderna says it is a great day and they plan to apply for approval to use the vaccine in the next few weeks. Based on data from 95 participants with confirmed cases of covid at least two weeks after.

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The new findings are very promising. Another 15,000 participants were given the vaccine, and only five of them developed. Moderna's coronavirus vaccine just started its phase 3 trial — the first in the us.

As they race to test an experimental coronavirus vaccine, researchers aren't waiting to see how well it prevents infection in animals before trying it in people, breaking from the usual protocol.

The new findings are very promising. The coronavirus vaccine trials have been closely watched to ensure they reflect the diversity of the u.s. The moderna trial involved more than 30,000 participants in the us split into two groups, with one group given two doses of the vaccine and the other group given a placebo. Cnbc's meg tirrell reports on changes to moderna's testing strategy as it continues its phase three trial.