fbpx
Connect with us

News

“Face shield with double masks gives up to 96% protection from Delta” Says Health DG

Published

Dr Noor Hisham Black Mask Face Shield Double Mask
Source: Astro Awani & DG Hisham l Twitter

Follow us on Facebook, Youtube, Twitter, and Instagram for the latest stories and updates daily.

The last time Dr Noor Hisham went live for the Ministry of Health’s (KKM) daily press conference, we saw him sporting a face shield in addition to being double-masked.

Previously in May, he advised us to start practising double masking so that we are more protected as it creates layers to filter out particles.

Pushing for the usage of face shields

On 23 August, he took to his Twitter account to talk about how we should add another layer, a face shield. In his first tweet, he said:

“Face masks & face shields could help prevent community transmission when physical distancing & stay-at-home measures are relaxed or no longer possible.”

He elaborated by saying that these barriers along with hand hygiene & avoiding the practice of touching your face can help stop airborne respiratory droplets from reaching you.

Woman In Supermarket Mask Face Shield

Like this but with the face shield down!

He posted a second tweet, mentioning that face shields should be part of the strategy to reduce transmission of Covid-19 in the community as it can be “quickly and affordably produced”.

His third tweet brought it home with a surprising statistic that we weren’t aware of:

“The usage of a face shield with double masks can give up to 96% of protection from the Delta variant that is dominant in our country.”

Previous studies reaffirm the success rate

According to a study done in 2014 by Lindsley et. al, an experiment was conducted by using a coughing patient simulator and a breathing worker simulator. Through that experiment, an influenza-laden cough aerosol with a volume median diameter (VMD) of 8.5 μm was used and the usage of only a face shield managed to reduce exposure by 96% and reduce the surface contamination of the respirator by 97%. 

However, an aerosol with a smaller VMD (3.4 μm) was used and this time, the face shield managed to block only 68% of the cough and reduce the surface contamination by 76%. How does this affect Covid-19 transmission rates? Well, a study by Lee Byung Uk in 2020 revealed that Covid-19 can be found in a respiratory particle of 4.7 μm. Hence, even with a smaller VMD, wearing a face shield would still be able to reduce surface contamination by quite a large percentage. 

Dr Noor Hisham Double Mask Face Shield

In the experiment by Lindsley et al., they also manipulated the distance variable which showed that physical distancing can help reduce exposure to particles. In conclusion, they say that face shields are useful for workers caring for patients with respiratory infections but they should not be substituted for respiratory protection (eg. face masks) when needed. 

Hence, we do believe that the combination of double masking and using a face shield will provide adequate protection against the transmission of the virus! 

 

Also read: Here’s When & Why You Should Practice Double Masking

Pjimage 31 1


Follow us on Facebook, Youtube, Twitter, and Instagram for the latest stories and updates daily.

Just In

Collage 10 2 Collage 10 2
News1 hour ago

Policeman Uses Mobile Phone While Driving on Federal Highway, PDRM Calls Him in & Issues a Summon

It’s not only illegal to be on the phone with your hands on the wheel but it also endangers other...

My Post 42 My Post 42
News3 hours ago

Prices of Necessities May Increase by up to 60% Next Month

There have been a lot of factors that have led to an increase in the prices of goods. The prices...

Collage Final 1 2 Collage Final 1 2
News20 hours ago

Malaysia Ranked 8th Most Dangerous Country to Drive in With Road Traffic Death Rate of 22.5

We all know how dangerous driving in Malaysia can be but how do we rank out of the other countries...

Collage 6 2 Collage 6 2
News22 hours ago

Pieces of Stone Statue Fall From Gopuram of Ipoh Temple, Kills A Woman & Injures 2 Others

A woman in Ipoh met her tragic & unfortunate death yesterday (15 May) during a ritual ceremony in a temple....

Collage 31 Collage 31
News23 hours ago

M’sian Family Shocked to Find That Their New House in Ipoh Had Collapsed Due to Landslide

A local family of five was recently shocked to find that a section of their new home in Taman Sri Perkasa...

Ft Ip Ft Ip
News1 day ago

PDRM has Thousands of IP Addresses Linked to Child Porn But Lack Manpower to Act on Them

It’s a scary world out there as cases of sexual crimes as well as child porn have unfortunately increased. Recently,...

Feat Image Abang Johari Norway Wealth Fund Feat Image Abang Johari Norway Wealth Fund
News3 days ago

Sarawak To Establish Its Own Sovereign Wealth Fund, Hopes To Replicate Norway’s Success

Sarawak Premier Tan Sri Abang Johari Tun Openg has announced that the territory is currently in serious talks with Norway...

Feat Image Mavcom Statement Feat Image Mavcom Statement
News3 days ago

MAVCOM: Airlines MUST Resolve Consumer Complaints & Provide Reimbursements Within 30 Days

The Malaysian Aviation Commission (MAVCOM) has stressed that the Malaysian Aviation Consumer Protection Code (MACPC) requires airlines to resolve consumer...

Announcement

Latest Videos



TRENDING TODAY