WATCH | Why are scientists testing a TB vaccine to see if it protects against Covid-19?

• Research suggests that this TB jab could help protect people from Covid-19
• There are at least 11 trials underway worldwide trying to prove this, including one in South Africa
• These trials could hold the key to understanding whether it is possible to train your immune system

Can the BCG vaccine protect you from Covid-19? Not all scientists agree, but here’s why trials underway around the world can help provide definitive answers.

*This story was produced by the Bhekisisa Centre for Health Journalism. Sign up for the newsletter.

^{Image credit: MSF}