Physical distancing over six feet may be essential to prevent COVID-19 transmission, says study
The researchers, including those from the Indian Institute of Science (IISc), Bengaluru, Karnataka, noted that it is well established that the SARS-CoV-2 virus that causes COVID-19 disease is transmitted via respiratory droplets that infected people eject when they cough, sneeze or talk.
View all Offers
- 67% OFF
Qube By Fort Collins Men's Fleece Sweatshirt (602Q_Maroon_M)₹ 524₹ 1599Buy On
- 66% OFF
Qube By Fort Collins Men's Parka Coat (522_Black_XXL)₹ 937₹ 2525Buy On
- 58% OFF
Qube By Fort Collins Women's Parka Coat (43322AZ_D.Navy_Medium)₹ 2099₹ 2099Buy On
- 70% OFF
Qube By Fort Collins Women's Parka Coat (W109Q_Deep Ocean_Large)₹ 1899₹ 1899Buy On
- 36% OFF
Marks & Spencer Women's Stretch Viscose Tee Cardigan Sweater (T38/5765X_Grey_16)₹ 999₹ 999Buy On
The team developed a mathematical model for the early phases of a COVID-19-like pandemic using the aerodynamics and evaporation characteristics of respiratory droplets.
The research, published in the journal Physics of Fluids, modelled the pandemic dynamics with a reaction mechanism, wherein each reaction has a rate constant obtained by calculating the droplet collision frequency.
The researchers then compared the droplet cloud ejected by an infected person to the one by a healthy person.
"The size of the droplet cloud, the distance it travels, and the droplet lifetimes are, therefore, all important factors that we calculated using conservation of mass, momentum, energy and species," said Swetaprovo Chaudhuri from the University of Toronto in Canada.
"The model could be used to estimate approximately how long droplets can survive, how far they can travel, and which size of droplet survives for how long," said Chaudhari, one of the authors of the study.
He added the actual situation could be complicated by wind, turbulence, air-recirculation or many other effects.
"Without wind and depending on the ambient condition, we found droplets travel between 8 to 13 feet before they evaporate or escape," said Abhishek Saha, a co-author, from the University of California, San Diego in the US.
This finding implies that social distancing at perhaps greater than six feet is essential, according to the researchers. The initial size of the longest surviving droplets is in the range of 18-50 microns, meaning masks can indeed help, they said.
These findings, the researchers said, could help inform reopening measures for schools and offices looking at student or employee density.
"This model is not claiming to predict the exact spread of COVID-19," said Saptarshi Basu, another study author, from IISc.
"But, our work shows that droplet evaporation or desiccation time is highly sensitive to the ambient temperature and relative humidity," Basu said.
(This story has not been edited by Business Insider and is auto-generated from a syndicated feed we subscribe to.)
- Sensex gains over 135 points, Nifty tests 18,350 — Sun Pharma, ITC, Tech Mahindra, Bajaj Finserv, Bajaj Finance, PowerGrid and Axis Bank top gainers
- Elon Musk’s Starlink satellites are leaving tracks that affect twilight observations
- India’s daily COVID-19 cases see a dip of 20,000, Omicron infections continue to surge
- How to stay creative when you feel dejected: Advertising industry’s Creative Officers share some tips
- Bajaj Finance, Tech Mahindra, Tata Power and other top stocks on January 18
- Mythology audiobooks
- Electric car Championship
- India's win in Centurion
- Millionaires Employees
- Car with Waiting Period
- Tax Saving Investment
- Urban Company
- New Year 2022
- Upcoming new laptops
- Bank Holidays in January
- Valuable NFT Projects
- Xiaomi 11i hypercharge
- GST Input tax credit
- Public Holidays in 2022
- RBL Stocks
- Upcoming Smartphones in 2022