More and more international health authorities are recommending face masks in order to prevent the spread of Covid-19. Rodesch and his team at the National Research Fund answered some of the more pressing queries for RTL Radio recently.
Although there are few studies at present, Rodesch confirmed that existing research showed that a small amount of particles could still be transmitted through any grade of protective mask. The coronavirus can also be transmitted through a person’s eyes, so the wearer is effectively not protected. However, masks can certainly help to prevent the wearer from passing on the virus to other people and are being encouraged as a form of solidarity and protection for the vulnerable.
Therefore, the wearing of masks is recommended even if you are not showing symptoms, as even asymptomatic people can still be carriers for the virus. If the general population wear masks when leaving their homes, it will help to protect everyone. Homemade masks, although not medical grade, can still help to absorb a large number of the droplets that emanate through coughing or normal speech.
One of the notable facts about the coronavirus is that a person can be infectious even if they are not displaying symptoms, as symptoms typically develop several days after the patient catches the virus. For this reason, Rodesch explained that masks could be used as a protective measure alongside other measures such as social distancing and thoroughly washing hands. The situation, however, is so new and uncertain that experts are asking the public not to depend 100% on masks, but to follow other guidelines in addition to protective items. Rodesch said in this instance the benefits of masks outweighed the potential dangers.
Rodesch dispensed with the rumour that a person could infect themselves through incorrect mask application, saying this had not been shown in studies. However he reiterated the importance of being careful when removing the mask and not touching the mouth area. A second risk associated with masks is a false sense of security, which could lead to people not observing other protective measures.
The public are dissuaded from purchasing professional grade masks to ensure those working within the health sector have sufficient stock available. For those seeking to make their own masks at home, a 2013 study which compared different types of materials for face masks revealed that a simple cotton t-shirt could suffice, as the material is breathable yet thick enough to provide some degree of protection for others. Rodesch recommended washing homemade masks at 60°C in order to kill off germs. Such masks are also recyclable.
When should we wear such masks? Rodesch recommended we follow the guidelines given by the Ministry of Health. For example, when undertaking exercise in an unpopulated area, masks are not necessary. However, for travel on public transport, or trips to the supermarket where it could be difficult to maintain social distancing, a mask would certainly help to protect other members of society.
Finally, Rodesch has put together a video tutorial explaining how to make a mask from an old t-shirt, no sewing necessary. Although the video is in Luxembourg, the instructions shown on screen are in English.
