As coronavirus continues to unfold all over the world, face masks are in excessive demand as individuals search for methods to guard themselves.
However do they actually shield most individuals from contracting the virus?
Dr Shunmay Yeung from London College of Hygiene and Tropical Drugs explains.
Please be aware: This video was produced on 13 March 2020 and primarily based on the recommendation out there from the World Well being Group and different well being teams on the time.
Learn extra: Coronavirus information: What should I do?