The Welsh Government has explained why it's not making people wear face masks as lockdown continues in Wales.
It comes after people in England were advised to wear face masks while in public, but the Welsh Government believes the benefits of doing so are only "marginal".
In a document released by the UK Government on Monday, people in England were advised to wear face coverings in enclosed spaces where social distancing is not always possible.
This includes on public transport, like the tube and buses, as well as in some shops.
The 50-page Covid-19 Recovery Strategy says: "As more people return to work, there will be more movement outside people's immediate household.
"This increased mobility means the government is now advising that people should aim to wear a face covering in enclosed spaces where social distancing is not always possible and they come into contact with others that they do not normally meet, for example on public transport or in some shops."
Though the document says masks will not provide protection for the wearer, they will protect against the "inadvertent transmission of the disease" if asymptomatic.
But today (Tuesday) Chief Medical Officer for Wales, Dr Frank Atherton, released a detailed statement as to why Wales is taking a different approach.
Dr Atherton said he wanted to present both the pros and cons of wearing masks and explained that there were certain benefits.
However, he said that there were three reasons behind the Welsh Government approach.
Chief Medical Officer for Wales, Dr Frank Atherton's reasons for not making masks compulsory
1: Stocks of PPE
"The first is in relation to stocks of clinical masks for frontline caregivers.
"We don’t know if there will be enough masks in the UK, let alone in Wales, if the public and employers are trying to buy clinical grade masks at the same time as the NHS.
"There may be a small benefit to public health if everyone wears a face covering, but we know there is a much bigger, proven benefit to public health if all our health and social care staff wear clinical grade masks when caring for people."
2: Behaviour of the public
"The second harm is from an increase in risky behaviours.
"Anyone with symptoms of a respiratory infection should be staying at home and it would not be acceptable for them to use a face covering in order to go shopping or to work.
"Wearing a face covering won’t protect you from others – it will protect others from you and then only if you don’t potentially transfer the virus in other ways.
"You will also need to maintain social distancing, keep washing your hands regularly in hot water and with soap and follow the other safety guidelines as well."
3: Discrimination
"The final harm is discrimination.
"Not everyone can buy a mask or make one. But you can stay safe by socially distancing, by keeping your hands clean and not touching your face, without a mask.
"As Chief Medical Officer for Wales, I am not recommending everyone wears a non-clinical face covering in Wales – I am not recommending they are compulsory.
"However, I support the public’s right to choose whether to wear them."
