We still don’t know the origins of the coronavirus. Here are 4 scenarios.

Experts say that understanding how the virus first leapt from animals to humans is essential to preventing future pandemics.

By Amy McKeever Published 6 Apr 2021, 13:46 BST

https://www.nationalgeographic.co.uk/science-and-technology/2021/04/we-still-dont-know-the-origins-of-the-coronavirus-here-are-4