Amit Shah arrives in Kerala to attend 90th Mahasamadhi of Sree Narayana Guru

New Delhi, Apr 24: The Central government said on Wednesday that the number of COVID-19 cases in the country is now doubling in every 10 days, adding that had the lockdown not been imposed on time, the number of cases would have sky-rocketed to over one lakh by now.

"Had we not taken the decision to impose nationwide lockdown, we would have had around one lakh COVID-19 cases by now. This is a reasonable estimate," said Niti Aayog member V.K. Paul.

Paul, who is also the Chairman of the government's Empowered Committee- 1, said the "cases are now doubling in every 10 days."

"As on March 21, our doubling time of cases was three days. Results started showing on March 23, due to travel restrictions imposed earlier. On April 6, further slowing of doubling rate became visible, thanks to the nationwide lockdown," he added.

He further added that the decision to impose the lockdown was timely and asserted that the curve has begun to flatten.

"Nationwide lockdown helped take us away from the exponential growth curve and thereby contain the growth of COVID-19 cases," he said.

Paul further added that surveillance has been a great strength in containing the spread of the virus.

"Besides containing the spread, augmenting testing and improving preparedness, the nation has brought about a massive behavioural change through a ‘Jan Andolan' (mass movement)," he said.

Meanwhile, the number of confirmed cases in the country has crossed the 23,000-mark, with 718 deaths. Globally, the number of cases has crossed 2.7 million while the death toll has mounted to 1.9 lakh.

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.

Kochi, Apr 24: The central government on Thursday submitted a statement in the Kerala High Court on the three petitions challenging the contract between Kerala government and US-based data analytics company Sprinklr.

Assistant Solicitor General P Vijayakumar filed the statement on behalf of the central government, which is the second respondent in the case.

The statement said that the contract between the Kerala government and Sprinklr dilutes the rights of the people. It stated the contract does not specify the amount of compensation that individuals should receive in case of breach of privacy or misuse of information.

It also said that it was not clear whether the information was collected and handed over to the data analytics firm with full consent of the patients (suspected and otherwise).

''It is always preferable to utilise the services available in the government sector for sharing sensitive data required for analytical purposes.

The Government of India has introduced the 'Aarogya Setu' application for collection of health data and about seven crore Indian citizens have already downloaded the same. All the state governments are advised to promote the said application for fighting the pandemic," the statement said.

It was further submitted that the "Government of India with the support of NIC is capable of providing all the requirements relating to data storage, processing and application which are being offered the third respondent, if a request to that effect comes from the state government."

Kerala Congress leader Ramesh Chennithala and BJP state president K Surendran had earlier approached the Kerala High Court seeking cancellation of the state government's agreement with Sprinklr for processing of data related to COVID-19 patients.