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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, Jan 18: Senior advocate Indira Jaising urged the mother of Nirbhaya to pardon the men on death row who were convicted for the 2012 gang rape of her daughter.

Jaising took to Twitter to make the request shortly after Asha Devi on Friday expressed her disappointment following a Delhi court postponed the date of the execution of the four convicts.

"While I fully identify with the pain of Asha Devi I urge her to follow the example of Sonia Gandhi who forgave Nalini and said she didn't not want the death penalty for her. We are with you but against the death penalty," Jaisingh tweeted.

While I fully identify with the pain of Asha Devi I urge her to follow the example of Sonia Gandhi who forgave Nalini and said she didn’t not want the death penalty for her . We are with you but against death penalty. https://t.co/VkWNIbiaJp

— Indira Jaising (@IJaising) January 17, 2020

Asha Devi lashed out at Jaisingh suggesting pardon for the convicts. "I can't believe how Indira Jaising even dared to suggest such this. I met her many times over the years in Supreme Court, not once she asked for my wellbeing and today, she is speaking for convicts. Such people earn livelihood by supporting rapists, hence rape incidents don't stop," Asha Devi told ANI.

Nalini was arrested and convicted for her role in the assassination of former prime minister Rajiv Gandhi in 1991.

Earlier on Friday Asha Devi had lashed out at the courts and the government stating that "the same people who had in the year 2012 gone around participating in rallies and raised slogans for women's safety are playing with the death of my daughter for their political gains. They have stopped the execution for their political gains."

The death-row convicts who were earlier slated to be executed on January 22 at 7 am are set to be hanged on February 1 at 6 am.

Asha Devi rued that the convicts got what they wished for. "I will not be satisfied until they are hanged," she added.

Four convicts, Vinay, Akshay, Pawan and Mukesh were convicted and sentenced to death for raping a 23-year-old woman in a moving bus in the national capital on the intervening night of December 16-17, 2012.

The victim, who was later given the name Nirbhaya succumbed to injuries at a hospital in Singapore where she had been airlifted for medical treatment.