September 18, 2020 #1 Local News, Information and Event Source for the Century City/Westwood areas.

Single-Use N95 Respirators Can Be Decontaminated and Used Again According to UCLA Study

N95 respirators, which are widely worn by health care workers treating patients with COVID-19 and are designed to be used only once, can be decontaminated effectively and used up to three times, according to research by UCLA scientists and colleagues.

An early-release version of their study has been published online, with the full study to appear in September in the journal Emerging Infectious Diseases.

N95 respirators reduce exposure to airborne infectious agents, including SARS-CoV-2, the virus that causes COVID-19, and are one of the key pieces of personal protective equipment used by clinical workers in preventing the spread of the virus. Critical shortages of these masks have driven efforts to find new decontamination methods that can extend their use.

“Although N95 respirators are designed for just one use before disposal, in times of shortage, N95 respirators can be decontaminated and reused up to three times,” said James Lloyd-Smith, a co-author of the study and a UCLA professor of ecology and evolutionary biology. “But the integrity of the respirator’s fit and seal must be maintained.”

In a controlled laboratory setting, the researchers tested several decontamination methods on small sections of N95 filter fabric that had been exposed to SARS-CoV-2. The methods included vaporized hydrogen peroxide, dry heat at 70 degrees Celsius (158 degrees Fahrenheit), ultraviolet light and a 70% ethanol spray. All four methods eliminated detectable viable virus traces from the N95 fabric test samples.

The investigators then treated fully intact, clean respirators with the same decontamination methods to test their reuse durability. Employees with the National Institutes of Health’s Rocky Mountain Laboratories in Montana volunteered to wear the masks for two hours to determine if they maintained a proper fit and seal over the face. The scientists decontaminated each mask three times, using the same procedure with each.

The masks treated with vaporized hydrogen peroxide experienced no failures, suggesting they potentially could be reused three times, Lloyd-Smith said. Those treated with ultraviolet light and dry heat began showing fit and seal problems after three decontaminations, suggesting these respirators potentially could be reused twice.

The study authors concluded that vaporized hydrogen peroxide was the most effective method because no traces of the virus could be detected after only a 10-minute treatment. They found that ultraviolet light and dry heat are also acceptable decontamination procedures, as long as the methods are applied for at least 60 minutes.

The ethanol spray, the scientists discovered, damaged the integrity of the respirator’s fit and seal after two sessions, and they do not recommend it for decontaminating N95 respirators.

The researchers stressed that anyone decontaminating an N95 respirator should closely check the fit and seal over the face before each reuse.

Co-authors of the study include Amandine Gamble, a UCLA postdoctoral researcher in Lloyd-Smith’s laboratory, as well as researchers with Rocky Mountain Laboratories, part of the NIH’s National Institute of Allergy and Infectious Diseases.

From UCLA Newsroom

Related Posts

Moved up Census: Time for Californians to Act

September 17, 2020

September 17, 2020

By Tom Elias, Columnist  California polls now show President Trump trails Democrat Joseph Biden in the upcoming presidential election by...

Track Coach Conrad Mainwaring Facing Sexual Abuse Allegations: Century City, Westwood Beat – September, 17, 2020

September 17, 2020

September 17, 2020

Local news and culture in under 5 minutes. * Track Coach Conrad Mainwaring Facing Sexual Abuse Allegations * As Covid19...

Local Man Missing Since Last Saturday

September 17, 2020

September 17, 2020

Police looking for Boyd “Christian” Holmes By Sam Catanzaro A reward is being offered for information surrounding the whereabouts of...

Trash Truck Catches Fire in Front of West LA Armory

September 17, 2020

September 17, 2020

LAFD put on fire on Federal Avenue Wednesday afternoon By Sam Catanzaro Los Angeles firefighters extinguished a fire that broke...

Edify TV: Sit-down Dining Safety?

September 17, 2020

September 17, 2020

Despite a recent CDC report stating the risks of in-person dining, many Westside restaurant patrons feel the experience is safe....

Sur La Table Files for Bankruptcy, Leaving Westside

September 17, 2020

September 17, 2020

Popular culinary store closing stores nationwide By Sam Catanzaro Sur La Table is closing its Santa Monica location, marking the...

Coronavirus Continues to Decrease in County but Air Quality Reducing Testing

September 15, 2020

September 15, 2020

Smoke advisory in effect through Wednesday By Sam Catanzaro While COVID-19 cases continue to decrease in Los Angeles County, health...

Edify TV: Westsiders Working out Amid Poor Air Quality

September 15, 2020

September 15, 2020

With poor air quality due to wildfire smoke, local health officials are urging the public to avoid outdoor activity but...

UCLA Study Suggests COVID-19 Could Have Been in Area as Early as Last December

September 15, 2020

September 15, 2020

UCLA study reports significant increase in coughs and acute respiratory failure prior to first official cases of COVID-19 By Sam...

Willy California Wants Men to Rethink Their Closet

September 15, 2020

September 15, 2020

Local clothing line reimagines athleisure By Toi Creel With ranges in styles for men’s clothing from suits and professional clothing...

Man Takes Unsolicited Photos Of Women In Westwood: Westwood Beat, September, 14, 2020

September 14, 2020

September 14, 2020

Local news and culture in under 5 minutes. * Man Takes Unsolicited Photos Of Women In Westwood * Mayor Eric...

August Westwood Village Shooting Victim in Stable Condition, Says LAPD

September 14, 2020

September 14, 2020

Suspect still at-large By Sam Catanzaro A victim from an August 22 Westwood Village shooting is in stable condition, Los...

UCLA Ranked Top Public University in Nation for Fourth Straight Year

September 14, 2020

September 14, 2020

U.S. News & World Report releases annual Best Colleges report By Staff Writer UCLA once again sits atop the list...

Edify TV: Over 100 Apartments Could Replace Palms Thrift Store

September 11, 2020

September 11, 2020

A lot that currently contains a thrift store in Palms near Sony Pictures Studios could soon be home to over...

UCLA Study: 1 in 5 Tenants in LA County Have Struggled to Pay Rent During Pandemic

September 11, 2020

September 11, 2020

UCLA and USC release joint report on impact of COVID-19 pandemic on renters By Staff Writer Over 20 percent of...

Comments
Leave a Reply

Your email address will not be published. Required fields are marked *