大象传媒

This has been an incredible year for scientific advance and collaboration, epitomised by the roll out of vaccines that didn鈥檛 exist a year ago, against a virus that no one had ever heard of .

And yet at the same time its been a year of incredible frustration. We are stil largely using the same methods to counter the virus that were used in past pandemics, going back a hundred years.
Here we look back at key the findings on who is most susceptible and why, and ask how to improve the strategies for reducing transmission.

(Image: Getty Images)

Presenter: Roland Pease
Producer: Julian Siddle