The Covid-19 pandemic has introduced numerous types of masks that can protect us from being infected by the deadly virus. However, a study has shown that face shields and masks with built-in exhalation valves are ineffective against the spread of Covid-19.
Researchers from Florida Atlantic University’s College of Engineering and Computer Science had conducted an investigation to prove the ineffectiveness of face shields and masks with valves. They used tiny droplets of glycerin and distilled water and installed in on a mannequin wearing a face shield and a mask with a valve to mimic coughing and sneezing. A laser light sheet was used to track and visualise the paths of the droplets once the mannequin expelled it from its mouth.
The study was published in a journal called Physics Of Fluids. It is reported that the face shield blocked the initial passage of the droplets but then moved around the visor and spread over to larger areas.
As for the mask with a valve, the researchers found that droplets could be seen expelled from the mannequin through the valve and spread around it. They also discovered that masks with valves beat the purpose to protect from infection as the valve is unfiltered.
Despite the comfort that these masks provide for the general public, it certainly does not protect enough to combat the deadly virus. According to the Swiss news portal, the physicians in the health department of the administrative district of Graübunden urged the public to avoid using face shields when going out as it offers little to no protection against Covid-19.
Choose the right mask and wear it properly to protect yourself and the public as well.
Slow Data? Well, Polls Shows Three In Five M’sians Are Not Getting Their Promised Internet Speed
If you’re stuck somewhere with slow data and a buffering YouTube video, you’ll relate to this survey. The Communications and...
Health D-G: More Infectious D614G Mutation Detected In All 32 Covid-19 Viral Strains
Health Director-General, Tan Sri Dr Noor Hisham Abdullah took to Facebook today (25 September) to announce the latest results of...
Get Your Umbrellas Ready As Malaysia Is Predicted To Go Through Another Monsoon Season
Get your ponchos and umbrellas ready because Malaysia is predicted to go through another monsoon season. It is expected to...
MOH: All Salt Must Be Added With Iodine Before Being Sold Starting 30 September 2020
According to the Ministry of Health, iodine must be added to all salt before being sold in Malaysia starting 30...
Video: Police Are On The Hunt For Driver Who Hit-And-Run Food Delivery Rider
A video that has been circulating around social media of a GrabFood rider involved in a brutal accident after a...
News21 hours ago
Shootout In Front Of Banting School Injures Six Including Three Students, Suspects Still At Large
Culture21 hours ago
Malaysian Actress Yeo Yann Yann Is A Nominee For Best Actress At The 2020 Emmy Awards
People19 hours ago
Malaysian Couple’s Romance Blooms While Finding For Parking Spots
Social Stories24 hours ago
Can You Believe It, AEON Celebrates 36th Anniversary in Malaysia!