SP supports what Quran says: Azam Khan on Triple Talaq Bill

New Delhi, Apr 15: As the world grapples with coronavirus, researchers have found the presence of a different kind of coronavirus -- bat coronavirus (BtCoV) --in two bat species from Kerala, Himachal Pradesh, Puducherry and Tamil Nadu, according to a study by the Indian Council of Medical Research (ICMR).

There is no evidence or research to claim that these bat coronaviruses can cause disease in humans, said Dr Pragya D Yadav, Scientist at the National Institute of Virology (NIV), Pune and also the first author of study.

The study has been published in the Indian Journal of Medical Research,

Twenty-five bats of Rousettus and Pteropus species from Kerala, Himachal Pradesh, Puducherry and Tamil Nadu were found positive for BtCoV in Kerala, Himachal Pradesh, Puducherry and Tamil Nadu.

"These bat coronaviruses have no relation with SARS-CoV2 responsible for the COVID-19 pandemic," Yadav said, adding that Pteropus bat species were earlier found positive for Nipah virus in 2018 and 2019 in Kerala.

"Bats are considered to be the natural reservoir for many viruses, of which some are potential human pathogens. In India, an association of Pteropus medius bats with the Nipah virus was reported in the past. It is suspected that the recently emerged severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) also has its association with bats," the objective of the study titled 'Detection of coronaviruses in Pteropus and Rousettus species of bats from different states of India' stated.

"In the present scenario of changing demography and ecological manipulations, it is challenging to have checks on the encounters of bats with other animals and humans," the study stated, highlighting that the need for active and continuous surveillance remains crucial for outbreak alerts for bat-associated viral agents with epidemic potential, which would be helpful in timely interventions.

"Although CoVs in the subfamily coronavirinae do not usually produce clinical symptoms in their natural hosts (bats), accidental transmission of these viruses to humans and other animals may result in respiratory, enteric, hepatic or neurologic diseases of variable severity. It is still not understood as to why only certain CoVs can infect people," the study said.

The scientists stressed on the need of proactive surveillance of zoonotic infections in bats.

The detection and identification of such viruses from bats also recommends cross-sectional antibody surveys (human and domestic animals) in localities where the viruses have been detected.

Similarly, if the epidemiological situation demands, evidence-based surveillance should also be conducted, the study said while emphasing on the need of developing strong mechanisms for working jointly with various stakeholders such as wildlife, poultry, animal husbandry and human health departments.

"In conclusion, our study showed detection of bat CoVs in two species of Indian bats. Continuous active surveillance is required to identify the emerging novel viruses with epidemic potential," Dr Yadav said.

Elaborating on the study, Dr Yadav said throat and rectal swab samples of two bat species -- Rousettus and Pteropus -- from seven states were screened for the bat coronvirus during which the representative samples collected from Kerala, Himachal Pradesh, Puducherry and Tamil Nadu tested positive while those from Karnataka, Chandigarh, Punjab, Telengana, Gujarat and Odisha came out negative.

The reverse-transcription polymerase chain reaction (RT-PCR) tests and sequencing were used for the confirmation of the findings.

"This is an ongoing study to understand the prevalence of the Nipah virus in bats," she said.

New Delhi, June 21: The world is feeling the need for yoga more than ever due to the coronavirus pandemic and the ancient Indian practice is helping a large number of Covid-19 patients across the globe in defeating the disease, Prime Minister Narendra Modi said on Sunday.

The coronavirus specifically attacks the respiratory system and 'pranayama' or breathing exercise helps in strengthening the respiratory system the most, Modi said in his message on the sixth International Day of Yoga.

Modi said yoga has emerged as a force for unity and it does not discriminate as it goes beyond race, colour, gender, faith and nations.

"Yoga enhances our quest for a healthier planet. It has emerged as a force for unity and deepens the bonds of humanity. It does not discriminate. It goes beyond race, colour, gender, faith and nations. Anybody can embrace Yog," the prime minister said.

In his nearly 15-minute address early Sunday morning, Modi said that due to the coronavirus pandemic, the world is feeling the need for yoga more than ever.

"If our immunity is strong, it is of great help in defeating this disease. For boosting immunity, there are several methods in yoga, various 'asanas' are there. These asanas are such that they increase the strength of the body and also strengthen our metabolism," he said.

Talking about the benefits of 'pranayama' -- a form of breathing exercise, Modi said it is very effective and has countless variations like 'Sheetali, Kapalbhati and Bhrastika'.

"All these forms of yoga, help a lot in strengthening both our respiratory and immune system," he said, urging people to include 'pranayama' in their daily routine.

"A large number of Covid-19 patients all over the world are taking the benefits of all these techniques of yoga. The strength of yoga is helping them defeat this disease," Modi said.

Asserting that anybody can embrace yoga, the prime minister said that all that is needed is some part of one's time and an empty space.

"Yoga is giving us not only the physical strength, but also mental balance and emotional stability to confidently negotiate the challenges before us," Modi said.

"If we can fine-tune our chords of health and hope, the day is not far away when world will witness the success of a healthy and happy humanity. Yoga can definitely help us make this happen," he said.

With the shadow of the COVID-19 pandemic looming large, International Day of Yoga is being marked on digital media platforms sans mass gatherings. This year's theme is 'Yoga at Home and Yoga with Family'.

Yoga Day is going digital for the first time since June 21, 2015, when it began to be celebrated annually across the world, coinciding with the Summer Solstice each year.

On December 11, 2014, the United Nations General Assembly declared June 21 as 'International Day of Yoga', months after Prime Minister Modi had proposed the idea.

The Ministry of Ayurveda, Yoga & Naturopathy, Unani, Siddha and Homoeopathy (AYUSH) had planned to hold a grand event in Leh, but cancelled it due to the pandemic.

In his message on Sunday, Modi said the International Yoga Day is a day of unity and gives the message of universal brotherhood.

"It is a day of oneness and humanness. What brings us together, unites us, that is yoga. What bridges distances is yoga. In times of this coronavirus pandemic, people's participation in the 'My Life - My Yoga' across the world shows that people's interest in yoga is increasing," he said.

He said that doing work properly and fulfilling one's duties is also a form of yoga.

"Eating the right food, playing the right sports, having right habits of sleeping and waking, and doing your work and your duties is yoga," Modi said.

"With this 'karmayoga', we get the solution to all the problems. 'Karmayoga' is also helping others selflessly. This spirit of 'karmayoga' is embedded in the spirit of India. Whenever the need arose, the whole world witnessed India's selflessness," he said.

The power as an individual, society and country increases manifold when people act according to yoga and with the spirit of 'karmayoga', Modi said.

"Today we have to take a pledge in this spirit -- we will do everything possible for our health, for the health of our loved ones. As a conscious citizen, we will move forward unitedly as a family and society," he said.

The PM's message was followed by a live demonstration of Common Yoga Protocol (CYP). The CYP drill was designed keeping in mind people of different age groups and of varied walks of life, the ministry had said in its statement.

Yoga programmes are organised across the globe by Indian missions every year, but this year will be different. Several missions are organising digital events to mark the occasion.

London, May 20: The current physical distancing guidelines of 6 feet may be insufficient to prevent COVID-19 transmission, according to a study which says a mild cough in low wind speeds can propel saliva droplets by as much as 18 feet.

Researchers, including those from the University of Nicosia in Cyprus, said a good baseline for studying the airborne transmission of viruses, like the one behind the COVID-19 pandemic, is a deeper understanding of how particles travel through the air when people cough.

In the study, published in the journal Physics of Fluids, they said even with a slight breeze of about four kilometres per hour (kph), saliva travels 18 feet in 5 seconds.

"The droplet cloud will affect both adults and children of different heights," said study co-author Dimitris Drikakis from the University of Nicosia.

According to the scientists, shorter adults and children could be at higher risk if they are located within the trajectory of the saliva droplets.

They said saliva is a complex fluid, which travels suspended in a bulk of surrounding air released by a cough, adding that many factors affect how saliva droplets travel in the air.

These factors, the study noted, include the size and number of droplets, how they interact with one another and the surrounding air as they disperse and evaporate, how heat and mass are transferred, and the humidity and temperature of the surrounding air.

In the study, the scientists created a computer simulation to examine the state of every saliva droplet moving through the air in front of a coughing person.

The model considered the effects of humidity, dispersion force, interactions of molecules of saliva and air, and how the droplets change from liquid to vapour and evaporate, along with a grid representing the space in front of a coughing person.

Each grid, the scientists said, holds information about variables like pressure, fluid velocity, temperature, droplet mass, and droplet position.

The study analysed the fates of nearly 1,008 simulated saliva droplets, and solved as many as 3.7 million equations.

"The purpose of the mathematical modelling and simulation is to take into account all the real coupling or interaction mechanisms that may take place between the main bulk fluid flow and the saliva droplets, and between the saliva droplets themselves," explained Talib Dbouk, another co-author of the study.

However, the researchers added that further studies are needed to determine the effect of ground surface temperature on the behaviour of saliva in air.

They also believe that indoor environments, especially ones with air conditioning, may significantly affect the particle movement through air.

This work is important since it concerns safety distance guidelines, and advances the understanding of the transmission of airborne diseases, Drikakis said.