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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 18: Very severe cyclonic storm ‘Amphan’, over central parts of South Bay of Bengal, has intensified into extremely severe cyclonic storm, the India Meteorological Department (IMD) said on Monday. The weather department has warned that ‘Amphan’ may turn into a “super cyclonic storm’.

According to experts, North Odisha coast will face the maximum impact of cyclone Amphan when it makes landfall.

“Wind speed expected to be 110-120 kmph, gusting up to 130 kmph. Balasore, Bhadrak, Jajpur, Mayurbhanj dist can be affected on 20 May (when it makes landfall), IMD Bhubaneswar scientist Umashankar Das told news agency ANI.

The IMD has said that ‘Amphan’ will cross West Bengal - Bangladesh coasts between Digha (WB) and Hatiya island - in the afternoon/evening of May 20 as very severe cyclonic storm.

Earlier, the IMD had warned that ‘Amphan’, over central parts of South Bay of Bengal, will intensify into an extremely severe cyclonic storm on Monday.

“Very Severe Cyclonic Storm (VSCS) ‘AMPHAN’ over central parts of South Bay of Bengal near latitude 12.5°N and longitude 86.4°E, about 870 km nearly south of Paradip (Odisha). To intensify further into an Extremely Severe Cyclonic Storm (ESCS) in the next six hours,” the IMD said in a tweet on Monday.

National Disaster Response Force (NDRF) has sent its 10 teams to Odisha and seven teams to West Bengal in view of the approaching Cyclone Amphan, news agency reported.

New Delhi, May 18: The nationwide tally of COVID-19 cases crossed one lakh on Monday with more people testing positive for the deadly virus in Maharashtra, Gujarat, Tamil Nadu and other states, even as a much-relaxed fourth phase of the lockdown began with restarting of market complexes, autos, taxis and inter-state buses in various parts of the country.

The death toll due to COVID-19 crossed the 3,000-mark too.

With an aim to reboot numerous locked down economic activities, authorities across the country ordered reopening of markets, intra-state transport services and even of barber shops and salons in some states, barring in containment zones.

However, schools, colleges, theatres, malls and religious gatherings are among those that would remain shut down, at least till May 31.

India has been under a lockdown since March 25, which was first supposed to be for 21 days or toll April 14, but was later extended till May 3, then further till May 17 and now for another two weeks till May 31.

However, a number of relaxations have been given in the current fourth phase, while states and union territories have also been granted significant flexibility for deciding the red, orange or green zones in terms of the quantum and severity of the virus spread.

In its morning 8 AM update, the Union Health Ministry put the total number of confirmed COVID-19 cases 96,169 and the death toll at 3,029.

It also said that 36,824 people have so far recovered from the infection.

However, a news agency tally of figures announced by different states and UTs as of 9.40 PM put the number of those having tested positive for the infection at 1,00,096, with a death toll of 3,078 and recoveries at 38,596 across the country.

Maharashtra topped the nationwide tally with over 35,000 confirmed cases and 1,249 deaths, followed by Tamil Nadu with 11,760 confirmed cases and 81 deaths.

Gujarat has also reported 11,746 confirmed cases, while its death toll is higher than that of Tamil Nadu at 694.

Delhi has also crossed the 10,000 mark in terms of the number of confirmed cases, while its death toll has now reached 160.

Gujarat, during the day, recorded 366 new COVID-19 cases and 35 deaths, including 31 from the worst-hit Ahmedabad, taking the state's case count to 11,746 and the number of fatalities to 694, a health department official said.

Maharashtra reported 2,033 new cases, taking the tally to 35,058.

This was the second consecutive day when the state has reported more than 2,000 COVID-19 cases.

Mumbai alone reported 1,185 fresh cases and 23 more deaths, taking the total count of the city to 21,152 and the fatalities to 757.

Of the 1,185 new cases, 300 samples were tested positive in private laboratories between May 12 and 16.

Kerala also saw 29 new cases -- all but one being returnees from overseas and other states --  raising concerns about the state witnessing a possible third wave of the dreaded virus infection.

The state was first to report the virus infection, but at least twice it has already been seen as having flattened the curve of the infection.

The nationwide count of confirmed infections incidentally crossed the crucial one-lakh mark on a day when the fourth phase of the nationwide lockdown kicked in with several relaxations for economic and public activities, barring in containment zones or areas identified as serious hotspots of the virus infection.

Revising its strategy for COVID-19 testing, ICMR also said on Monday that returnees and migrants who show symptoms for influenza-like illness will be tested for coronavirus infection within seven days of ailment and stressed that no emergency clinical procedure, including deliveries, should be delayed for lack of testing.

The Indian Council of Medical Research (ICMR) in its revised strategy for coronavirus testing in India also added that all hospitalised patients who develop symptoms for influenza-like illness (ILI) and frontline workers involved in containment and mitigation of COVID-19 having such signs will also be tested for coronavirus infection through RT-PCR test.

Besides, asymptomatic direct and high-risk contacts of a confirmed case are to be tested once between day five and day 10 of coming in contact, the new document stated.

Asymptomatic contacts of a confirmed case were being tested once between day five and day 14.

The Health Ministry also said that for every one lakh population, there are 7.1 coronavirus cases in India so far as against 60 globally.

It also said the recovery rate of coronavirus cases in India stood at 38.39 per cent.

Besides, India also joined nearly 120 countries at a crucial conference of the World Health Organisation in pushing for an impartial and comprehensive evaluation of the global response into the coronavirus crisis as well as to examine the origin of the deadly infection.

Since the first case of the deadly coronavirus was reported in China last December, more than 47 lakh people have tested for this virus across the world and over 3 lakh have lost their lives.

India is the 11th most affected country, while the US tops the chart with over 14.9 lakh confirmed cases so far.

China's official tally of confirmed infections is less than 84,000, while it has reported more than 4,600 deaths.