Two die, 70 hospitalised after chemical gas leak at LG Polymers in Andhra Pradesh's Vizag

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, Mar 3: A day after two new cases of novel coronavirus that included one from Delhi were reported, the Health Ministry on Tuesday said six cases with "high-viral load" were detected during sample testing in Agra and these people have been kept in isolation. The six people had come in contact with a 45-year-old patient from Delhi, whose case came to light on Monday, and they include his family members.

According to government sources, the man, who is a resident of Mayur Vihar, had visited them in Agra.

The six have been kept in isolation at Safdarjung Hospital in Delhi and their samples are being sent to NIV, Pune for confirmation.

Contact tracing of the people who came in contact with the six is simultaneously being done through the Integrated Disease Surveillance Program (IDSP) network, the ministry said in a statement.

Sources said the patient from Mayur Vihar was shifted to a quarantine ward at Safdarjung Hospital on Sunday night.

His other family members have been asked to stay alert and look out for symptoms. One accountant, who came in contact with the man and some of his family members, was also quarantined, they said.

India on Monday reported two new cases of the novel coronavirus, one from Delhi and another one from Hyderabad. The government has stepped up its efforts to detect and check the infection which has killed 2,912 people in China.

On Monday, Rajasthan Health Minister Raghu Sharma had said that an Italian tourist tested positive for coronavirus in Jaipur.

The first sample collected from him on February 29 tested negative but his condition deteriorated, so a second sample was collected which tested positive on Monday, the minister said, adding, "Since there is a variation in the reports, the samples have been sent to the NIV, Pune for testing".

India had earlier reported three cases from Kerala, including two medical students from Wuhan in China, the epicentre of the deadly novel coronavirus. They had self-reported on their return to the country and tested positive for the infection. They were discharged from hospitals last month following recovery.

The infected person from Delhi had travelled to Italy, while the other patient who tested positive for the COVID-19 infection is from Telangana and had recently travelled to Dubai.

Both the patients had self-reported after they developed symptoms.

"They tested positive. They are stable and being closely monitored," ministry said on Monday.

The government has asked people to avoid non-essential travel to Iran, Italy, South Korea and Singapore and said India was in discussions with authorities in Iran and Italy, two countries badly affected by the infection, to evacuate Indians there.

The novel coronavirus or COVID-19, which originated in China, has spread to over 60 countries.