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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, Apr 12: With 34 deaths and 909 new positive COVID-19 cases in the last 24 hours, the total number of coronavirus cases in India on Sunday climbed to 8356, including 716 cured and discharged and 273 deaths, said the Ministry of Health and Family Welfare.

At present, there are 7367 active COVID-19 cases in the country.

"A total number of COVID-19 positive cases rises to 8356 in India, including 716 cured/discharged, 273 deaths and 1 migrated," said the Health Department.

The highest number of positive cases of coronavirus was reported from Maharashtra at 1761, including 127 deaths, followed by Delhi (1069 and 19 deaths), Tamil Nadu (969 and 10 deaths) and Rajasthan (700 and 3 deaths).

There are 452 coronavirus positive cases in Uttar Pradesh, including 45 cured and discharged and 5 deaths.

The states which have crossed 200-mark for COVID-19 positive cases also include Madhya Pradesh (532), Telangana (504), Gujarat (432), Andhra Pradesh (381) and Kerala (364).

While 19 people were detected positive for coronavirus in Chandigarh, 207 cases were confirmed from Jammu and Kashmir and 15 from Ladakh.

In North-East, Assam has confirmed the highest number of corona positive cases at 29, followed by Manipur and Tripur at two each and Mizoram, Arunachal Pradesh at one each.

New Delhi, Apr 1: The number of COVID-19 cases climbed to 1,637 in the country on Wednesday while the death toll rose to 38, according to the Union Health Ministry.

The number of active COVID-19 cases stands at 1,466, while 132 people were either cured or discharged and one had migrated to another country, the ministry stated.

As per the health ministry's updated data at 9 AM, three fresh deaths were reported since the last update on Tuesday. However, it could not be known from which parts of the country these three fatalities were reported.

Till Tuesday night, Maharashtra had reported the most deaths (9) in the country so far, followed by Gujarat (6), Karnataka (3) Madhya Pradesh (3), Punjab (3), Delhi (2), West Bengal (2) and Jammu and Kashmir (2). 

Kerala, Telangana, Tamil Nadu, Bihar and Himachal Pradesh have reported a death each.

The state-wise breakup of the cases was also not available immediately.