Finally, Mangaluru Airport provides a prayer-room for air passengers

The current physical distancing guidelines provided by the World Health Organisation (WHO) and by the US Centers for Disease Control and Prevention (CDC) may not be adequate to curb the coronavirus spread, according to a research which says the gas cloud from a cough or sneeze may help virus particles travel up to 8 metres. The research, published in the Journal of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.

Study author, MIT associate professor Lydia Bourouiba, warned that droplets of all sizes can travel 23 to 27 feet, or 7-8 metres, carrying the pathogen.

According to Bourouiba, the current guidelines are based on "arbitrary" assumptions of droplet size, "overly simplified", and "may limit the effectiveness of the proposed interventions" against the deadly pandemic.

 She explained that the old guidelines assume droplets to be one of two categories, small or large, taking short-range semi-ballistic trajectories when a person exhales, coughs, or sneezes.

However based on more recent discoveries, the MIT scientist said, sneezes and coughs are made of a puff cloud that carries ambient air, transporting within it clusters of droplets of a wide range of sizes.

Bourouiba warned that this puff cloud, with ambient air entrapped in it, can offer the droplets moisture and warmth that can prevent it from evaporation in the outer environment.

"The locally moist and warm atmosphere within the turbulent gas cloud allows the contained droplets to evade evaporation for much longer than occurs with isolated droplets," she said.

"Under these conditions, the lifetime of a droplet could be considerably extended by a factor of up to 1000, from a fraction of a second to minutes," the researcher explained in the study.

The MIT scientist, who has researched the dynamics of coughs and sneezes for years, added that these droplets settle along the trajectory of a cough or sneeze contaminating surfaces, with their residues staying suspended in the air for hours.

"Even when maximum containment policies were enforced, the rapid international spread of COVID-19 suggests that using arbitrary droplet size cutoffs may not accurately reflect what actually occurs with respiratory emissions, possibly contributing to the ineffectiveness of some procedures used to limit the spread of respiratory disease," Bourouiba wrote in the study

Bengaluru, Jan 10: Education technology company Byju’s is learnt to have raised $200 million in a funding round from Tiger Global Management, which has valued the Bengaluru-based start-up at around $8 billion, making it the third-largest unicorn (start-up valued over $1 billion) in the country.

With this, the Byju Raveendran-founded company has seen over 50 per cent jump in its valuation in just around nine months. In March 2019, Byju’s was valued $5.4 billion, when it raised around $31 million from General Atlantic, and Chinese investment giant Tencent.

At the current valuation, Byju’s has now replaced home-grown cab-hailing major Ola as the third-largest unicorn, next only to Paytm and OYO, which are valued around $16 billion and $10 billion, respectively.

Byju’s confirmed the transaction through a press statement, though the company declined to share any specific details of the deal. Tiger Global could not be immediately reached for its comments.

“We are happy to partner with a strong investor like Tiger Global Management. They share our sense of purpose and this partnership will advance our long-term vision of creating an impact by changing the way students learn,” said Raveendran. “This partnership is both a validation of the impact created by us so far and a vote of confidence for our long-term vision.”

This is Tiger Global’s first investment in the edutech space in India after Vendantu, an online tutoring platform, where it, along with WestBridge Capital, led a $42-million round in August.

An early backer of India’s internet growth story, the New York-headquartered Tiger Global has been a prolific investor in the Indian start-up space. Its portfolio in the country ranges from consumer focused e-commerce companies that are vital for the growth of the sector, such as Flipkart, Delhivery, Grofers, Quikr and PolicyBazaar, to mention a few.

After tasting success with Flipkart, one of its earliest investments, where it had pumped in around $1 billion, the PE major is now doubling down its focus on the Indian start-up space, under its new investment head Scott Shleifer.

Shleifer, who set up international private equity practice for Tiger Global, is said to be as aggressive deal maker like his predecessor Lee Fixel, who left the investment firm in March. Since then, Tiger has also invested in a host of technology-focused companies in diverse sectors including Ninjacart, CRED, NoBroker and Facilio to mention a few.

“Byju’s has emerged as the leader in the Indian education-tech sector. They are pioneering technology shaping the future of learning for millions of school students in India,” Shleifer was quoted in the press statement issued by the edutech firm.

Bengaluru, May 28: As many as 115 new coronavirus cases were reported in Karnataka on Thursday taking the infection count to 2,533, Karnataka Minister S Suresh said.

The total coronavirus cases include 834 discharges, 1,650 active cases, 47 deaths so far due to the disease and two deaths due non-COVID causes, Suresh Kumar, who is minister for primary and secondary education, said during the daily COVID-19 briefing.

According to him, 29 cases were reported in Udupi on Thursday, followed by 24 in Dakshina Kannada district, 13 in Hassan, 12 in Bidar, nine in Bengaluru Urban, seven in Yadagiri, six in Chitradurga, five in Kalaburagi, four in Haveri, three in Chikkamagaluru, two in Vijayapura and one in Raichur.

The minister said among the new cases, 95 are inter-state passengers and two international passengers.

According to the health department, 84 infected people have returned from Maharashtra and eight from Tamil Nadu.

Among those discharged today, 13 are in Davangere, 12 in Dakshina Kannada, nine each in Yadagiri and Vijayapura, five in Gadag, three in Belagavi, one each in Mysuru and Bagalkote.

Two are severe acute respiratory infection cases.

There were, however, no coronavirus related deaths in the state today, the minister said.

Kumar said the government has issued another circular making changes in the quarantine rules.

"A person who has completed seven days of institutional quarantine and is asymptomatic can be permitted for home quarantine without a COVID test, subject to undergoing medical check-up," the minister said.

According to the circular, all elderly people of above 60 years of age and those with comorbidities such as diabetes, hypertension, asthma, heart ailment and renal diseases, are required to be clinically evaluated diligently prior to shifting them to home quarantine.

Such people will be under mandatory home quarantine for seven days, the circular read.