Early Trials Show Progress Toward Coronavirus Vaccine

The World Health Organization counts at least 23 vaccines against COVID-19 in some stage of clinical trials around the world. Early results from drug makers Moderna and AstraZeneca have been encouraging, but a viable vaccine remains months away at a minimum.

Here & Now's Peter O'Dowd checks in on a few of the leading efforts to vaccinate against the coronavirus with Helen Branswell at STAT.