News
Masks with valves ‘won’t properly protect others’
Victoria’s Chief Health Officer has issued clear advice that masks with valves will not help to limit the spread of coronavirus.
Brett Sutton wants people to understand that masks with valves should not be worn during the pandemic because the wearer can still breathe out the virus. (Image: AAP)
Victorian Premier Daniel Andrews has been reassured by the sight of people throughout Melbourne following the rules and wearing masks in an effort to stop the spread of coronavirus.
‘It is heartening to see so many people listening to those messages, changing their normal habits and embedding mask and face-covering-wearing as part of just the normal daily routine,’ he said last week.
‘A small thing, but … it makes a significant contribution.’
Not all masks, however, are equally effective and the state’s Chief Health Officer wants people to understand that masks with valves should not be worn during the COVID-19 pandemic because the wearer can still breathe out the virus.
‘It allows the wearer to breathe out more easily and stops moisture build-up, but the problem is that it allows you to breathe out virus if you’re infected,’ Professor Brett Sutton said in a tweet on the weekend.
‘So although it might protect you, it won’t properly protect others if you are infected. So please, no valves on masks for COVID-19.’
This advice is particularly relevant in light of the fact many people in Australia reportedly purchased masks with valves amid the summer bushfires and may be inclined to use those during the current pandemic.
Some GPs have also reported patients requesting medical exemptions from wearing a mask. The Victorian Department of Health and Humans Services (DHHS) has
issued updates regarding lawful exemptions.
A face covering is not required in the following circumstances:
- Infants and children under the age of 12 years
- A person who is affected by a relevant medical condition – including problems with their breathing, a serious skin condition on the face, a disability or a mental health condition. This also includes persons who are communicating with a person who is hearing impaired, where the ability to see the mouth is essential for communication.
- Persons for whom wearing a face covering would create a risk to that person’s health and safety related to their work, as determined through OH&S guidelines.
- Persons whose professions require clear enunciation or visibility of their mouth. This includes teaching or live broadcasting.
Premier Andrews has also called out people who refuse to wear a mask, branding them ‘selfish’ in light of the rising number of COVID-related deaths in Victoria.
‘If you are just making a selfish choice that your alleged personal liberty, quoting something you’ve read on some website – this is not about human rights,’ he said.
‘There are 10 families that are going to be burying someone in the next few days. Wear a mask.’
According to Ben Mullins, an Associate Professor at Curtin University’s School of Public Health, while most government departments are suggesting that any mask is better than nothing, patients should understand that masks with exhalation valves should be avoided if possible.
‘The valve will stop some big droplets, while some big droplets will collect on the inside surface of the filter before they go through the valve, but it’s not ideal,’ he
told the ABC.
‘A surgical mask will limit droplet emissions more than a mask with an exhalation valve does.’
Log in below to join the conversation.
face masks masks with valves pandemic Victoria
newsGP weekly poll
Health practitioners found guilty of sexual misconduct will soon have the finding permanently recorded on their public register record. Do you support this change?