Everything you need to know

SHOPPERS are set to face a whole new world as masks become compulsory in stores.

As of next Friday anyone going to a corner shop, high street giant or supermarket, will have to cover up – or risk a £100 fine.

After weeks of mixed messages from the Government, many are confused by the move.

So we’ve asked a panel of experts the key questions...

Why is wearing a mask important?

Martin McKee, professor of European public health at the London School of Hygiene and Tropical Medicine, says: “We know much more about this virus.

“We have learned it can spread

Q Aby speaking or singing, not just a cough or sneeze. It is really important to stop the virus escaping from people’s noses and mouths.” Is it true masks don’t protect wearers from infection?

They safeguard other people, not the wearer. Prof McKee says: “We want to stop droplets drying in air and forming an aerosol.

“Once they form an aerosol, anything short of PPE will not stop it being inhaled.” Which type should I choose? Several coverings are available, from medical-grade respirators to disposable masks and scarf-type

Q AQ Aones with filters. Public health consultant Maggi Morris says: “The highest-grade masks are quite expensive and most are disposable. “Lower-grade masks are also disposable and you’ll get through a few a day, while cloth coverings need to be regularly washed. “If you buy a mask with a filter, keep changing the filter.” Are homemade face masks effective?

Ms Morris says: “In a Covid ward the

PROF MCKEE ON WHY MASKS CAN SAVE LIVES

Q Aanswer would be no. But [it] will help protect others.”

How should the mask fit around my face?

Prof John Ashton, former regional head of Public Health for the North West, says: “It should fit snug over your nose and mouth.” Should I change my mask during the day?

Change it if you’ve sneezed or coughed into it, says Ms Morris. “Wash your hands or sanitise before putting another one on.” Is wearing a scarf just as good? It’s better than nothing, but Ms Morris warns: “It won’t fit as

Q AIt spreads by talking, as well as coughing & sneezing

Q AQ A