CAMBRIDGE (CBS) – Moderna is one step closer to completing its coronavirus vaccine trial.

The Cambridge-based company said Thursday it has officially enrolled all 30,000 participants in the third phase of the trial, which involves two shots of the vaccination.

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Right now, 25,654 (85-percent) of them have received the second dose.

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Once everyone has the second vaccination, Moderna will take two months to assess the safety of it. If the benefits outweigh the risks, the company will then submit a request to the FDA to start emergency use of the vaccine. That would be given to frontline medical workers and other at-risk people first.

Moderna hopes the federal government could give approval for emergency use by the end of the year.

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