COVID-19 treatments: What’s taking the clinical trials so long?

Eight months into the COVID-19 pandemic in the U.S., it remains unclear whether two of the most promising treatments actually work. With a vaccine not expected until 2021, there’s an urgent need for effective therapeutics for COVID-19.

NBC reports on the delays and problems faced in running clinical trials for convalescent plasma and monoclonal antibodies.

Many trials are only beginning now, months into the pandemic, because researchers focused their early efforts on therapies, such as hydroxychloroquine, that didn’t pan out.