Iranians shot down airliner: Western leaders

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, Mar 6: Shares of YES Bank and State Bank of India came under huge selling pressure on Friday as developments unfolded regarding SBI picking stake in the private lender. Shares of the lender hit record low of Rs 5.55, plunging 85 per cent, and were trading below its previous low of Rs 8.16 hit on March 9, 2009.

SBI, on the other hand, slumped 11 per cent to Rs 257.35 on the BSE. The benchmark S&P BSE Sensex was trading with a cut of over 3 per cent at 37,251.37 level.

In the past three months, share price of the private lender has plunged 41 per cent, while the state-owned lender has slipped 14 per cent. In comparison, the S&P BSE Sensex has dipped 5.6 per cent till Thursday.

On Thursday, the Reserve Bank of India superseded the board of troubled private sector lender YES Bank and imposed a 30-day moratorium on it “in the absence of a credible revival plan” amid a “serious deterioration” in its financial health.

During the moratorium, which came into effect from 6 pm on Thursday, YES Bank will not be allowed to grant or renew any loans, and “incur any liability”, except for payment towards employees’ salaries, rent, taxes and legal expenses, among others.

This is the first time that a bank of this size will be put under a moratorium by the RBI.

“The financial position of YES Bank had undergone a steady decline “largely due to inability of the bank to raise capital to address potential loan losses and resultant downgrades, triggering invocation of bond covenants by investors, and withdrawal of deposits,” RBI said in a statement.

“After the moratorium, the next step will be to infuse to money and keep the bank afloat. So from shareholders’ point of view, the future is certainly hazy as the capital requirement is huge. The good part, however, is that the RBI has stepped in and depositors don't have to worry,” says Siddharth Purohit, a research analyst at SMC Securities.

Meanwhile, analysts at Nomura believe that placing the Bank under moratorium implies that equity value in the bank would be negligible, and that the chances of private capital participating in future capital raising plan are near zero.

"Any resolution for Yes Bank is more proposed from the perspective of deposit holders and systemic stability, and not from the perspective of Yes Bank equity investors or even perpetual bond holders," they wrote in a note dated March 6.

In another development, SBI’s Board Thursday gave in-principle approval to consider an “investment opportunity” in YES Bank, even as it said “no decision had yet been taken to pick up stake in the bank”.

According to a  report, highly-placed sources indicated a rescue plan involving SBI and Life Insurance Corporation of India (LIC) was being discussed and an announcement in this regard might be made soon.

“While the finer details of the deal are being worked out, it is anticipated that both SBI and LIC together will take a 51 per cent stake in the bank, with a one-year lock-in period,” the report said.

Most analysts believe it is a positive step for the Indian financial sector as the government has tried to avoid a repeat of IL&FS-like crisis.

“The move is a positive step for the financial sector as a whole. By this, the government has tried to avoid a repeat of IL&FS-like crisis and has saved the depositors,” said AK Prabhakar, Head of Research at IDBI Capital. While we know that YES Bank has a huge pile of bad loans, SBI is the only bank that has the capacity to absorb it, he added.

However, the valuation at which YES bank would be taken over remains a cause of concern.

Global brokerage firm JP Morgan Thursday cut its target price for YES Bank on Thursday to Rs 1 per share, taking into account the potential fall in the lender’s net worth due to stressed assets.

“We believe forced bailout investors will likely want the bank to be acquired at near-zero value to account for risks associated with the stress book and likely loss of deposits. We think the bank will need to be recapitalised at nominal equity value and could test dilution of additional tier 1 (AT1) capital. We remain underweight and cut our target price to Rs 1 as we believe net worth is largely impaired,” JP Morgan said in a note.

Global brokerage firm Nomura estimates a need of Rs 25,000-44,000 crore and adjusted for Rs 7,400 crore of current coverage, if the current stress of Rs 65,000-70,000 crore faces 70 per cent loss given default (LGD).

"It implies Rs 18,000-37,000 crore needed for provisioning against the current net worth of Rs 25,700 crore Also, to run as going concern, the bank would require over Rs 20,000 crore of CET-1 capital as well," the note said.

YES Bank has registered slippages of Rs 12,000 crore so far in FY20, while it has placed Rs 30,000 crore of loan assets under the watch list. Its deposits stood at Rs 2.09 trillion on September 30, 2019, while its advances totalled Rs 2.24 trillion. The bank has delayed publishing its December quarter results by a month to March 14.

Sao Paulo, June 20: Brazil’s government confirmed on Friday that the country has risen above 1 million confirmed coronavirus cases, second only to the United States.

The country’s health ministry said that the total now stood at 10,32,913, up more than 50,000 from Thursday. The ministry said the sharp increase was due to corrections of previous days’ underreported numbers.

Brazilian President Jair Bolsonaro still downplays the risks of the virus after nearly 50,000 deaths from COVID-19 in three months, saying the impact of social isolation measures on the economy could be worse than the disease itself.

Specialists believe the actual number of cases in Brazil could be up to seven times higher than the official statistic. Johns Hopkins University says Brazil is performing an average of 14 tests per 1,00,000 people each day, and health experts say that number is up to 20 times less than needed to track the virus.

Official data show a downward trend of the virus in Brazil’s north, including the hard-hit region of the Amazon, a plateau in cases and deaths in the countries’ biggest cities near the Atlantic coast, but a rising curve in the south.

In the Brazilian countryside, which is much less prepared to handle a crisis, the pandemic is clearly growing. Many smaller cities have weaker health care systems and basic sanitation that’s insufficient to prevent contagion.

“There is a lot of regional inequality in our public health system and a shortage of professionals in the interior,” said Miguel Lago, executive director of Brazil’s Institute for Health Policy Studies, which advises public health officials.

That creates many health care deserts, with people going long distances to get attention. When they leave the hospital, the virus can go with them.

The cattle-producing state of Mato Grosso was barely touched by the virus when it hit the nation’s biggest cities in March. Sitting far from the coast, between the Bolivian border and Brazil’s capital of Brasilia, its 33 lakh residents led a mostly normal life until May. But now its people live under lockdown and meat producers have dozens of infected workers.

In Tangará da Serra, a city of 1,03,000 people in Mato Grosso, the mayor decided Friday to forbid the sale of alcoholic drinks for two weeks as an incentive for people to stay home.

Fᢩo Junqueira said the measure was needed after a spike in COVID-19 cases that filled 80% of the city’s 54 intensive care beds. The city has had nearly 300 cases of the disease, plus three fatalities.

In Rondonópolis, only 300 miles away from Tangará da Serra and home to a thriving economy, health authorities closed the local meatpacking industry after 92 cases were confirmed there. The city of 1,44,000 inhabitants counted 21 deaths from the virus and more than 600 cases. The mayor has also decided to limit sales of alcoholic beverages.

Even regions once considered examples of successful efforts against the virus are now struggling.

Porto Alegre, home to about 14 lakh people, had success in slowing the virus’ spread over the last three months. But now its mayor is considering increasing social isolation measures after ICU occupancy in the city jumped to 80% this month.

We were already making projections for schools to come back, Mayor Nelson Marchezan Jr. told The Associated Press. Now the trend is to impose more restrictions. Outside Sao Paulo city, five regions of the state’s countryside will have to close shops starting Monday due to a rise in coronavirus cases. Governor João Doria announced the decision Friday.

Dr. Mike Ryan, the World Health Organization’s executive director, said at a news conference that Brazil needs to increase its efforts to stop the spread of infections.

“The epidemic is still quite severe in Brazil. I believe health workers are working extremely hard and under pressure to be able to deal with the number of cases that they see on a daily basis,” Dr. Ryan said.

“Certainly the rise is not as exponential as it was previously, so there are some signs that the situation is stabilising. But we’ve seen this before in other epidemics in other countries.”

Margareth Dalcolmo, a clinical researcher and professor of respiratory medicine at the state-funded Oswaldo Cruz Foundation in Rio de Janeiro, believes the reopening in major cities and the virus traveling by road into Brazil’s heartland will keep the pressure on the country’s health system.

“The risk in the interior now is very big,” she said. “Our health system just can’t solve the most serious cases of COVID in many places of the countryside.”