Hot or cold weather may have no significant effect on COVID-19 spread: Study


PTI, Nov 3, 2020, 2:33 PM IST

Houston: Temperature and humidity do not play a significant role in the spread of the novel coronavirus, that causes COVID-19, according to a study led by an Indian-origin researcher in the US.

The study, published in the International Journal of Environmental Research and Public Health, suggests that the transmission of COVID-19 from one person to the next depends almost entirely on human behaviour, irrespective of hot or cold weather.

The researchers noted that weather influences the environment in which the coronavirus must survive before infecting a new host.

However, it also influences human behaviour, which moves the virus from one host to another, they said.

“The effect of weather is low and other features such as mobility have more impact than weather. In terms of relative importance, weather is one of the last parameters,” said Dev Niyogi, a professor at the University of Texas (UT) at Austin, US, who led the research.

The study defined weather as “equivalent air temperature,” which combines temperature and humidity into a single value.

The scientists then analysed how this value tracked with coronavirus spread in different areas from March to July 2020, with their scale ranging from US. states and counties, to countries, regions and the world at large.

At the county and state scale, the researchers also investigated the relationship between coronavirus infection and human behaviour, using cellphone data to study travel habits.

The study examined human behaviour in a general sense and did not attempt to connect it to how the weather may have influenced it.

At each scale, the researchers adjusted their analyses so that population differences did not skew results. Across scales, the scientists found that the weather had nearly no influence.

The researchers compared the weather with other factors using a statistical metric that breaks down the relative contribution of each factor towards a particular outcome.

They found that the weather”s relative importance at the county scale was less than 3 per cent, with no indication that a specific type of weather promoted spread over another.

In contrast, the data showed the clear influence of human behaviour — and the outsized influence of individual behaviours, according to the researchers.

Taking trips and spending time away from home were the top two contributing factors to COVID-19 growth, with a relative importance of about 34 per cent and 26 per cent respectively, they said.

The researchers noted that the next two important factors were population and urban density, with a relative importance of about 23 per cent and 13 per cent respectively.

“We shouldn”t think of the problem as something driven by weather and climate. We should take personal precautions, be aware of the factors in urban exposure,” said study co-author Sajad Jamshidi, a research assistant at Purdue University in the US.

Maryam Baniasad, a doctoral candidate at Ohio State University, US said that assumptions about how coronavirus would respond with weather are largely informed by studies conducted in laboratory settings on related viruses.

Baniasad said that this study illustrates the importance of studies that analyse how the coronavirus spreads through human communities.

“When you study something in lab, it”s a supervised environment. It”s hard to scale up to society. This was our first motivation to do a more broad study,” she added.

Udayavani is now on Telegram. Click here to join our channel and stay updated with the latest news.

Top News

Bhagwant Mann is AAP’s CM face for Punjab assembly polls

Some COVID-19 patients may be infectious even after ten days: Study

India to provide assistance to the families of two Indians killed in UAE: Envoy

SC to consider hearing plea seeking disclosure of criminal background of candidates before polls

Belagavi: Bommai seeks report in case related to death of three babies

Illegal sand mining: ED raids multiple locations in Punjab

PM Modi is incarnation of God like Lord Ram and Lord Krishna born to end despair: MP minister


Related Articles More

Some COVID-19 patients may be infectious even after ten days: Study

COVID: DC directs temporary closure of schools in DK with over five percent positivity

Karnataka logs 27,156 COVID-19 cases, test positivity rate comes down

Experts foresee COVID peak on Jan 25 in Karnataka: Minister R Ashoka

34,047 Covid-19 cases, 13 deaths reported in Karnataka

MUST WATCH

Night Curfew : Shops, stall will close before 10pm(jan 17)

NEWS BULLETIN 17-01-2022

THE HISTORY OF KRISHNAPURA MUTT SWAMIJI

DOCTOR BEATS UP A VEGETABLE VENDOR

Vidyasagara Teertha Swamiji Paryaya Message


Latest Additions

Yellapura: Woman gives birth to twins in 108 ambulance

Bhagwant Mann is AAP’s CM face for Punjab assembly polls

Pornography case: SC grants protection from arrest to Poonam Pandey

Some COVID-19 patients may be infectious even after ten days: Study

B’luru: Case against man for gifting lingerie to tenant, seeking sexual favours

Thanks for visiting Udayavani

You seem to have an Ad Blocker on.
To continue reading, please turn it off or whitelist Udayavani.