Moderna, the Massachusetts biotechnology company behind a leading effort to create a coronavirus vaccine, announced promising early results from its first human safety tests Monday. The company plans to launch a large clinical trial in July aimed at showing whether the vaccine works.
The company reported that in eight patients who had been followed for a month and a half, the vaccine at low and medium doses triggered blood levels of virus-fighting antibodies that were similar or greater than those found in patients who recovered. That would suggest, but doesn’t prove, that it triggers some level of immunity. The antibody-rich blood plasma donated by patients who have recovered is separately being tested to determine whether it is an effective therapy or preventive measure for covid-19.