[https://www.usefulscience.org/podcast/38](https://www.usefulscience.org/podcast/38)

The Useful Science team provides a breakdown on clinical trials - what they are, why they matter, and how long they take. As a wave of urgent clinical trials related to COVID19 is unfolding around the world, researchers try to balance the need for vaccines & treatment with ethical concerns and the health of study participants.

Music by Solomon Krause-Imlach.

Follow us @usefulsci or email us at podcast@usefulscience.org.

Show Notes* Ethics of controlled human infection to address COVID-19 * What risks should be permissible in controlled human infection model studies?