The first human trial to evaluate a candidate vaccine against the new coronavirus has begun in Seattle, US health officials said Monday, raising hopes in the global fight against the disease.
But it may be another year to 18 months before it becomes available, once it has passed more trial phases to prove it works and is safe.
The vaccine is called mRNA-1273 and was developed by US National Institutes of Health (NIH) scientists and collaborators at biotechnology company Moderna, which is based in Cambridge, Massachusetts.
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