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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.

Hyderabad, Mar 31: Six people from Telangana who attended a religious congregation in Delhi's Nizamuddin died due to the novel coronavirus, the state government said on Monday.

"Coronavirus has spread among some of those who attended a religious prayer meeting from March 13 to 15 at Markaz in Nizamuddin area in Delhi," according to an official release. "Among those who attended were some persons from Telangana."

Two of the six died at the Gandhi Hospital, one each in two private hospitals, and one each in Nizamabad and Gadwal towns, the statement said, without mentioning the time of their deaths.

The special teams under the collectors have identified the persons who came in contact with the deceased and they are shifted to the hospitals, it said.

Police and paramilitary personnel cordoned off a major area in Nizamuddin West in south Delhi on Monday and over 200 people have been kept in isolation in hospitals after several people who took part in a religious congregation there showed symptoms of coronavirus.

The Telagana government asked those who participated in the prayers to inform the authorities. It will conduct tests and offer treatment to them free of cost, according to the release.

The government also requested the people to alert if they come to know about those who participated in the prayers.

Earlier a separate government release said a person died of COVID-19 in Telangana, taking the toll to two and the total number touched 77 after six fresh cases were reported on Monday.

As many as 13 patients who underwent treatment for the virus were discharged on Monday, a media bulletin on COVID-19 issued by the state government said.

A techie, the first COVID-19 case in Telangana, has been discharged recently. The state now has 61 active cases, the bulletin said.

Chief Minister K Chandrashekar Rao had on Sunday said barring a 76-year-old person, who had other ailments, the other patients were doing well.

Rao had said 25,937 people were under surveillance and being watched by 5,746 teams and they would be out of watch after completing their mandated 14-day quarantine period. He had said all those who are under observation would be out of vigil by April 7 if there are no fresh suspected cases.

"From March 30, their time is nearing completion. After that, they do not need to be under any surveillance. By April 7, we will have a situation of zero... We pray God that we should not get new cases,"