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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.

Gurugram, Jul 12: Union Home Minister Amit Shah on Sunday said that the whole world was appreciating India's successful fight against the COVID-19 pandemic.

Speaking ahead of the mega tree plantation drive of the Central Armed Police Forces (CAPFs) at the Central Reserve Police Force (CRPF) Officers' Training Academy in Kadarpur village here, the Home Minister also lauded the contribution of security forces in the battle against COVID-19 in the country.

"India is one of the most populous countries. Everyone thought how will a country like India battle COVID-19, there were apprehensions but today the whole world is witnessing how one of the most successful battles against COVID-19 has been fought here," the Home Minister said.

"In India's battle against COVID-19, all of our security forces are playing a huge role, nobody can deny it. Today, I salute these corona warriors. They have proved that they not only know how to fight terrorism but also against COVID with help of people," he added.

The Union Home Minister said that many jawans have given up their lives during the COVID-19 crisis phase and paid tributes to them.

"I have talked to families of those jawans and today once again I thank them, your sacrifice will not go waste. Whenever the history of the human race's fight against COVID-19 is written, the contribution of India's security forces will be mentioned in golden ink," he said.

He also hailed the plantation drive and said that trees planted today should be taken care of by the jawans till they reach maturity, he added the trees chosen for plantation today consisted mostly those which had a long life and would help the generations to come.

Together the CAPFs have targeted to plant around 10 lakh tree saplings across the country today. Heads of all the CAPFs or their representatives were present in the event held at Gurugram.