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New Delhi, May 31: A low pressure area formed over Arabian sea and Lakshadweep is likely to intensify further into a cyclonic storm and reach coastal states of Maharashtra and Gujarat next week, the Indian Meteorological Department (IMD) said on Sunday.

Sunitha Devi, in charge of cyclones at IMD, said, "A low pressure area has formed over southeast and adjoining east central Arabian sea and Lakshadweep area. It is very likely to concentrate into a depression during the next 24 hours and intensify further into a cyclonic storm during subsequent 24 hours."

She added, "It is likely to move nearly northwards and reach near north Maharashtra and Gujarat coasts by 3rd June."

A low pressure area and a depression are the first two levels on the IMD's eight-category scale used to classify cyclones based on their intensity.

The weather bureau said that the sea condition will be very rough and advised fishermen not to venture into the sea till June 4.

It has forecast heavy to very heavy rainfall over south coastal Maharashtra for June 2-4, on north coast on June 2-3 and in Gujarat, Daman and Diu and Dadar and Nagar Haveli on June 3-5.

IMD said that under the influence of likely formation of a low pressure system over Arabian Sea, conditions will become favourable from June 1 for onset of monsoon over Kerala.

The arrival date for monsoon in Kerala is around June 1 every year and in Maharashtra around June 10.

On Saturday, a private forecasting agency claimed that monsoon has already hit Kerala, but the assertions were quickly rebutted by the Ministry of Earth Sciences.

"The news about monsoon onset over Kerala in Social Media is not correct. Monsoon has not arrived over Kerala. The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge a"Stephen Hawking," saidAMadhavan Rajeevan, Secretary, Ministry of Earth Sciences.

Kuldeep Srivastava, the head of IMD's Regional Weather Forecasting Centre said that the formation of a low pressure system in Arabian sea and its movement towards Gujarat coast will bring moisture to Delhi-NCR and North West India from June 3.

Two storms are forming over the Arabian Sea, one lies off the African coast and is likely to move over Oman and Yemen, while the other is placed close to India.

The development comes almost ten days after 'Amphan' pummeled four districts of Bengal in the fiercest cyclone in the region in a century, that left 86 people dead and rendered ten million people homeless.

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.