In order to limit the chance of catching coronavirus, many have taken to wearing face masks. At the weight of the Covid-19 outbreak in China, the demand for surgical masks reached 200 million a day.
That said, there is conflicting evidence as to how much face masks can help against catching the virus. One thing that is widely accepted is that the masks are effective at protecting from droplets – the main transmutation route of coronavirus.
But in order for masks to protect, they have to be worn correctly, changed frequently, and removed and disposed of correctly.
According to the World Health Organisation (WHO), people who are sick and show symptoms should wear masks. However, the WHO advises that healthy people only need to wear them