Never miss a story

Get subscribed to our newsletter


×
Photo by Pixaba

Researchers from Yale University have developed a passive air sampler clip that can help assess personal exposure to SARS-CoV-2

Masks, social distancing, proper hygiene and ventilation can help reduce the transmission of Covid-19 in public places, but even with these measures, scientists have detected airborne SARS-CoV-2 in indoor settings. Now, researchers from Yale University have developed a passive air sampler clip that can help assess personal exposure to SARS-CoV-2, which could be especially helpful for workers in high-risk settings, such as restaurants or health care facilities.

The researchers developed a wearable passive air sampler, known as the Fresh Air Clip, that continually adsorbs virus-laden aerosols on a polydimethylsiloxane (PDMS) surface. Described in ACS' Environmental Science & Technology Letters, the clip is a small, lightweight, inexpensive and wearable device that doesn't require a power source.

Covid-19 is primarily transmitted through the inhalation of virus-laden aerosols and respiratory droplets that infected individuals expel by coughing, sneezing, speaking or breathing.

Fresh Air Clip The researchers developed a wearable passive air sampler, known as the Fresh Air ClipPhoto by Yale University


Previously active air sampling devices helped detect airborne SARS-CoV-2 in indoor settings; however, these monitors are typically large, expensive, non-portable and require electricity. The team tested the air sampler in a rotating drum in which they generated aerosols containing a surrogate virus, a bacteriophage with similar properties to SARS-CoV-2.

They detected the virus on the PDMS sampler using the polymerase chain reaction (PCR), showing that the device could be used to reliably estimate airborne virus concentrations. Then, the researchers distributed Fresh Air Clips to 62 volunteers, who wore the monitors for five days.

PCR analysis of the clips detected SARS-CoV-2 RNA in five of the clips: Four were worn by restaurant servers and one by a homeless shelter staff person. The highest viral loads (more than 100 RNA copies per clip) were detected in two badges from restaurant servers.

Although the Fresh Air Clip has not yet been commercialised, these results indicate that it could serve as a semiquantitative screening tool for assessing personal exposure to SARS-CoV-2, as well as help identify high-risk areas for indoor exposure, the researchers said.

(IANS/JB)

(Keywords: SARS-CoV-2, Infection, Coronavirus, Delta, Omicron, Masks, Social Distancing, Ventilation, Health, Medicine)


Popular

Sikandar Ali / Unsplash

In 2018, state heads of ASEAN countries graced the occasion with their presence.

There will be no chief guest at the Republic Day parade this year also as the plan to host state heads of five Central Asian countries -- Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan and Uzbekistan -- seems to have been cancelled due to the Covid situation in India as well as in the respective nations. Though the Ministry of External Affairs is yet to confirm this officially.

Also Read : Republic Day 2021: Significance of the Day and highlights of the Parade

Keep Reading Show less
Unsplash

Infection with antibiotic-resistant bacteria and biofilm formation halt healing progress.

A team of scientists from the Banaras Hindu University (BHU) have found a cure for those suffering from chronic wounds, particularly with diabetic foot ulcers. The team led by Prof Gopal Nath of the department of Microbiology, Institute of Medical Sciences, said that wounds that took months and years to heal, could now be cured in days or months. The findings of study have been published in the National Centre for Biotechnology Information, National Institutes of Health, US.

Also Read : Researchers develop Hydrogel to treat infections in wound

Keep Reading Show less

The legendary captain was great in batting but did not score a ton for more than two years.

By Anna Melnikova

The Indian cricket lovers have been waiting for a ton from Virat Kohli for a long time, and he finally has made it. However, not in the batting as most fans expect, but in catching balls.

The second day of the 3rd Test in Capetown between local Proteas and the Men in Blue was rich for interesting occasions. Thus, South Africa was waiting for a good scoring result after stopping all Indian batters on the first day. Their opponents, however, have been looking for nice bowling not to lose the game just in the first innings. And while Bumrah added five wickets to his score, one of the dismissals should go to Virat Kohli. By the way, if you want more cricket news in India, we recommend subscribing to the specified site using the link.

Keep reading... Show less