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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, May 17: With the highest-ever spike of close to 5,000 cases in the past 24 hours, the COVID-19 count in India has crossed 90,000 on Sunday.

With an increase of 4,987 COVID-19 cases being reported in the last 24 hours, the count has reached 90,927, according to the Union Ministry of Health and Family Welfare.

The total number of active cases in the country stands at 53,946 today, while 2,872 deaths have been recorded due to the infection so far, with one patient having migrated. 120 deaths were reported in the last 24 hours.

However, on the positive side, close to 4,000 patients have also been cured and discharged in the past 24 hours, taking the tally of cured patients to 34,108.

With 30,706 confirmed cases, Maharashtra remains the worst-affected by the infection in the country.

It is followed by Gujarat and Tamil Nadu, with 10,988 and 10,585 cases, respectively.
The national capital, with 9,333 cases, is also one of the regions which is badly affected by the infection.

New Delhi, Jul 9: India reported the highest single-day spike of 24,879 new positive cases and 487 deaths in the last 24 hours, taking the total number of COVID-19 cases in the country to 7,67,296, according to the Union Ministry of Health and Family Welfare.

Out of the total number of cases, 2,69,789 are active, 4,76,378 have been cured/discharged/migrated and 21,129 have died.

Maharashtra remains the worst-affected state due to COVID-19 with as many as 2,23,724 cases, including 91,084 active, 1,23,192 cured/discharged and 9,448 deaths.

It is followed by Tamil Nadu (1,22,350) and Delhi (1,04,864).

Meanwhile, a total of 1,07,40,832 samples have been tested for COVID-19 till July 8. Of these, 2,67,061 samples were tested yesterday, stated Indian Council of Medical Research (ICMR).