Clouds do prevent radars from detecting accurately: Air Marshal Raghunath Nambiar

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, Jun 3: India registered its highest single-day spike in COVID-19 cases on Wednesday with 8,909 more cases reported in the last 24 hours, taking the country's tally to 2,07,615, while the death toll rose to 5,815 according to the Union Health and Family Welfare Ministry.

The number of active COVID-19 cases stood to 1,01,497 while 1,00,303 people have been cured/discharged/migrated.

According to the Union Health and Family Welfare Ministry, out of all the states, Maharashtra has recorded the highest number of coronavirus cases with 72,300 patients followed by Tamil Nadu with 24,586 cases.

Jan 22: India's ranking in the latest global Democracy Index has dropped 10 places to the 51st spot out of 167 owing to violent protests and threats to civil liberties challenging freedoms across the country.

Prime Minister Narendra Modi's government has been criticized by rights groups and western governments after shutting off the internet and mobile phone networks and detaining opposition politicians in Kashmir.

Modi’s government has also responded harshly to ongoing protests against a controversial, religion-based citizenship law. Muslims have said their neighborhoods have been targeted, while the central government has attempted to ban protests and urged TV news channels not to broadcast “anti-national” content. Some leaders in Modi’s ruling party called for “revenge” against protesters. India’s score in 2019 was its worst ranking since the EIU’s records began in 2006, and has fallen gradually since Modi was elected in 2014.

The Economist Intelligence Unit’s 2019 Democracy Index, which provides an annual comparative analysis of political systems across 165 countries and two territories, said the past year was the bleakest for democracies since the research firm began compiling the list in 2006.

“The 2019 result is even worse than that recorded in 2010, in the wake of the global economic and financial crisis,” the research group said in releasing the report on Wednesday.

The average global score slipped to 5.44 out of a possible 10 -- from 5.48 in 2018 -- driven mainly by “sharp regressions” in Latin America, Sub-Saharan Africa, the Middle East and North Africa. Apart from coup-prone Thailand, which improved its score after holding an election last year, there were also notable declines in Asia after a tumultuous period of protests and new measures restricting freedom across the region’s democracies.

Asia Declines

Hong Kong, meanwhile, fell three places to rank 75th out of 167 as more than seven months of violent and disruptive protests rocked the Asian financial hub. An aggressive police response early in the unrest, when protests were mostly peaceful, led to a “marked decline in confidence in government -- the main factor behind the decline in the territory’s score in our 2019 index,” the group said.

In Singapore, which ranked alongside Hong Kong at 75th, a new “fake news” law led to a deteriorating score on civil liberties.

“The government claims that the law was enacted simply to prevent the dissemination of false news, but it threatens freedom of expression in Singapore, as it can be used to curtail political debate and silence critics of the government,” EIU analysts said.

China’s score fell to just 2.26 in the EIU’s ranking, placing it near the bottom of the list at 153, as discrimination against minorities, repression and surveillance of the population intensified. Still, in China “the majority of the population is unconvinced that democracy would benefit the economy, and support for democratic ideals is absent,” the EIU said.