Swami Aseemanand, associates acquitted in 2007 Makkah Masjid terror attack case

London, May 20: The current physical distancing guidelines of 6 feet may be insufficient to prevent COVID-19 transmission, according to a study which says a mild cough in low wind speeds can propel saliva droplets by as much as 18 feet.

Researchers, including those from the University of Nicosia in Cyprus, said a good baseline for studying the airborne transmission of viruses, like the one behind the COVID-19 pandemic, is a deeper understanding of how particles travel through the air when people cough.

In the study, published in the journal Physics of Fluids, they said even with a slight breeze of about four kilometres per hour (kph), saliva travels 18 feet in 5 seconds.

"The droplet cloud will affect both adults and children of different heights," said study co-author Dimitris Drikakis from the University of Nicosia.

According to the scientists, shorter adults and children could be at higher risk if they are located within the trajectory of the saliva droplets.

They said saliva is a complex fluid, which travels suspended in a bulk of surrounding air released by a cough, adding that many factors affect how saliva droplets travel in the air.

These factors, the study noted, include the size and number of droplets, how they interact with one another and the surrounding air as they disperse and evaporate, how heat and mass are transferred, and the humidity and temperature of the surrounding air.

In the study, the scientists created a computer simulation to examine the state of every saliva droplet moving through the air in front of a coughing person.

The model considered the effects of humidity, dispersion force, interactions of molecules of saliva and air, and how the droplets change from liquid to vapour and evaporate, along with a grid representing the space in front of a coughing person.

Each grid, the scientists said, holds information about variables like pressure, fluid velocity, temperature, droplet mass, and droplet position.

The study analysed the fates of nearly 1,008 simulated saliva droplets, and solved as many as 3.7 million equations.

"The purpose of the mathematical modelling and simulation is to take into account all the real coupling or interaction mechanisms that may take place between the main bulk fluid flow and the saliva droplets, and between the saliva droplets themselves," explained Talib Dbouk, another co-author of the study.

However, the researchers added that further studies are needed to determine the effect of ground surface temperature on the behaviour of saliva in air.

They also believe that indoor environments, especially ones with air conditioning, may significantly affect the particle movement through air.

This work is important since it concerns safety distance guidelines, and advances the understanding of the transmission of airborne diseases, Drikakis said.

New Delhi, Jun 13: In a bid to provide relief to small businesses amid the coronavirus pandemic, the GST Council on Friday decided to halve the interest rate on late filing of GSTR-3B returns for the period of February, March and April 2020.

The interest rate on late return filing will be 9% from the usual 18% till September 30, 2020. The benefit will be available for small taxpayers with aggregate turnover of up to Rs 5 crore.

For the three months, small taxpayers will not be charged any interest till the notified dates for relief and thereafter 9% interest will be charged till September 30, a Finance Ministry statement said.

"For small taxpayers (aggregate turnover upto Rs 5 crore), for the supplies effected in the month of February, March and April 2020, the rate of interest for late furnishing of return for the said months beyond specified dates (staggered upto 6th July 2020) is reduced from 18 per cent per annum to 9 per cent per annum till 30.09.2020," said the statement.

The Council has also extended relief to small taxpayers for subsequent period of 2020 through waiver of late fees and interest if the returns in Form GSTR-3B for the supplies effected in the months of May, June and July are furnished by September 2020.

It has also decided to reduce the late fee on the filing of GSTR-3B returns for the period between July 2017 and January 2020. The late fee has been capped at Rs 500, but interest will be charged at the existing rate on the due tax liability.

Speaking to the media in New Delhi after a GST Council meet through videoconference, Union Finance Minister Nirmala Sitharaman said that those entities with no tax liability will not have to submit the late fee for the period.

For entities with tax liability but which have not filed returns or have filed returns late, the late fee has been capped at Rs 500 without interest. Interest will, however, be payable on the tax component at the applicable rate for delays.

To facilitate taxpayers who could not get their cancelled GST registrations restored in time, the Council has provided an opportunity for filing of application for revocation of cancellation of registration up to September 30, 2020, in all cases where registrations have been cancelled till June 12, 2020.

New Delhi, May 22: The number of COVID-19 cases averted due to the lockdown is in the range of 14-29 lakh, while the number of lives saved is between 37,000 and 78,000, the government said on Friday citing various studies, and asserted that the unprecedented shutdown has paid “rich dividends” in the fight against the pandemic.

The lockdown in India has been a timely, graded, proactive and pre-emptive public health measure to fight the COVID-19 pandemic and has been part and parcel of the government’s overall strategy, Dr V K Paul, Member (Health), NITI Aayog, and Chairman, Empowered Group 1, said at a media briefing on the COVID-19 situation.

The government imposed the nationwide lockdown from March 25 to prevent the spread of the novel coronavirus and it is currently in its fourth phase.

Like the number of cases, the growth rate of number of COVID-19 deaths too has fallen significantly due to the lockdown, marking a notable difference between pre-lockdown and post-lockdown situations, he said.

At the briefing, Pravin Srivastava, Secretary, Ministry of Statistics and Programme Implementation gave model-based estimates on COVID-19 cases and deaths which have been prevented due to the lockdown.

As per Boston Consulting Group's model, the lockdown saved between 1.2 lakh and 2.1 lakh lives, while the number of COVID-19 cases averted is between 36 lakh and 70 lakh, he said.

According to Public Health Foundation of India, nearly 78,000 lives have been saved due to the lockdown, Srivastava said.

Citing a model by two independent economists, he said that around 23 lakh COVID-19 cases and 68,000 deaths have been averted due to the lockdown.

Some independent experts, including retired scientists, have calculated that around 15.9 lakh cases and 51,000 deaths have been averted due to the lockdown, Srivastava said.

A joint study by the Ministry of Statistics and Programme Implementation and the Indian Statistical Institute found that around 20 lakh COVID-19 cases and 54,000 deaths were averted due to lockdown, he said.

The number of COVID-19 cases averted due to the lockdown is in the range of 14-29 lakh, while the number of lives saved is between 37,000 and 78,000, the official said.

“We are fully confident that the lockdown, with full public cooperation, has reaped rich dividends,” Srivastava said.

The strong defence of the lockdown, comes a day after the health ministry said the period of lockdown has been gainfully utilized to ramp up the health infrastructure, with around 3,027 dedicated COVID-19 hospitals and 7,013 care centres being readied across the country to fight the disease.

The announcement on Thursday came after some media reports questioned the country's preparedness to deal with the highly infectious disease.

"There are reports in a section of the media about some decisions of the government regarding the lockdown implementation and response to COVID-19 management. The period of the lockdown has been gainfully utilised to ramp up the health infrastructure in the country," the ministry had said.

Addressing the press briefing on Friday, joint secretary in the health ministry Lav Agarwal said 48,534 COVID-19 patients, which is about 41 per cent of the total cases, have recovered so far. As many as 3,234 patients have recovered in the last 24 hours, he said’

The COVID-19 mortality rate has dropped from 3.13 per cent on May 19 to 3.02 per cent as focus was on containment measures andclinical management of cases, Agarwal said.

An ICMR official said 27,55,714 tests for COVID-19 have been conducted till 1 pm Friday with 1,03,829 tests done in one day. Over 1 lakh tests for COVID-19 have been done each day for the last four days, the official said.

The growth rate of novel coronavirus cases witnessed a steep decline from Apr 4 when lockdown put a brake on the speed of increase of cases, V K Paul said.

The number of COVID-19 cases would have risen exponentially had the lockdown not been implemented, he said, adding that the doubling rate of cases was 3.4 days when the lockdown started and it is 13.3 days at present.

The COVID-19 outbreak in India has remained confined to limited areas with 80 per cent of active cases in just five states, Paul said

He said around 80 pc of COVID-19 deaths have been in Maharashtra, Gujarat, Madhya Pradesh, West Bengal and Delhi.