When the World Health Organisation saw data from a study into a possible coronavirus drug treatment, it immediately halted trials for safety reasons.

The data implied that use of the drug hydroxychloroquine didn't help COVID-19 patients at best, and was even possibly harmful.

But it turns out that the data were suspect, misleading and based on some pretty weird assumptions.

Today, the story of a mysterious company that changed coronavirus treatment policies, and has called into question how medical studies are published.

Also on today's show:

* How do I stay safe from coronavirus if you’re planning to demonstrate or go to a rally.