Encroachment of Wakf land in Mangaluru: BJP leader’s multi-crore complex raises eyebrows

The coronavirus can stay aloft for hours in tiny droplets in stagnant air, infecting people as they inhale, mounting scientific evidence suggests.

This risk is highest in crowded indoor spaces with poor ventilation, and may help explain superspreading events reported in meatpacking plants, churches and restaurants.

It’s unclear how often the virus is spread via these tiny droplets, or aerosols, compared with larger droplets that are expelled when a sick person coughs or sneezes, or transmitted through contact with contaminated surfaces, said Linsey Marr, an aerosol expert at Virginia Tech.

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Aerosols are released even when a person without symptoms exhales, talks or sings, according to Marr and more than 200 other experts, who have outlined the evidence in an open letter to the World Health Organization.

What is clear, they said, is that people should consider minimizing time indoors with people outside their families. Schools, nursing homes and businesses should consider adding powerful new air filters and ultraviolet lights that can kill airborne viruses.

What does it mean for a virus to be airborne?

For a virus to be airborne means that it can be carried through the air in a viable form. For most pathogens, this is a yes-no scenario. HIV, too delicate to survive outside the body, is not airborne. Measles is airborne, and dangerously so: It can survive in the air for up to two hours.

For the coronavirus, the definition has been more complicated. Experts agree that the virus does not travel long distances or remain viable outdoors. But evidence suggests it can traverse the length of a room and, in one set of experimental conditions, remain viable for perhaps three hours.

How are aerosols different from droplets?

Aerosols are droplets, droplets are aerosols — they do not differ except in size. Scientists sometimes refer to droplets fewer than 5 microns in diameter as aerosols. (By comparison, a red blood cell is about 5 microns in diameter; a human hair is about 50 microns wide.)

From the start of the pandemic, the WHO and other public health organizations have focused on the virus’s ability to spread through large droplets that are expelled when a symptomatic person coughs or sneezes.

These droplets are heavy, relatively speaking, and fall quickly to the floor or onto a surface that others might touch. This is why public health agencies have recommended maintaining a distance of at least 6 feet from others, and frequent hand washing.

But some experts have said for months that infected people also are releasing aerosols when they cough and sneeze. More important, they expel aerosols even when they breathe, talk or sing, especially with some exertion.

Scientists know now that people can spread the virus even in the absence of symptoms — without coughing or sneezing — and aerosols might explain that phenomenon.

Because aerosols are smaller, they contain much less virus than droplets do. But because they are lighter, they can linger in the air for hours, especially in the absence of fresh air. In a crowded indoor space, a single infected person can release enough aerosolized virus over time to infect many people, perhaps seeding a superspreader event.

For droplets to be responsible for that kind of spread, a single person would have to be within a few feet of all the other people, or to have contaminated an object that everyone else touched. All that seems unlikely to many experts: “I have to do too many mental gymnastics to explain those other routes of transmission compared to aerosol transmission, which is much simpler,” Marr said.

Can I stop worrying about physical distancing and washing my hands?

Physical distancing is still very important. The closer you are to an infected person, the more aerosols and droplets you may be exposed to. Washing your hands often is still a good idea.

What’s new is that those two things may not be enough. “We should be placing as much emphasis on masks and ventilation as we do with hand washing,” Marr said. “As far as we can tell, this is equally important, if not more important.”

Should I begin wearing a hospital-grade mask indoors? And how long is too long to stay indoors?

Health care workers may all need to wear N95 masks, which filter out most aerosols. At the moment, they are advised to do so only when engaged in certain medical procedures that are thought to produce aerosols.

For the rest of us, cloth face masks will still greatly reduce risk, as long as most people wear them. At home, when you’re with your own family or with roommates you know to be careful, masks are still not necessary. But it is a good idea to wear them in other indoor spaces, experts said.

As for how long is safe, that is frustratingly tough to answer. A lot depends on whether the room is too crowded to allow for a safe distance from others and whether there is fresh air circulating through the room.

What does airborne transmission mean for reopening schools and colleges?

This is a matter of intense debate. Many schools are poorly ventilated and are too poorly funded to invest in new filtration systems. “There is a huge vulnerability to infection transmission via aerosols in schools,” said Don Milton, an aerosol expert at the University of Maryland.

Most children younger than 12 seem to have only mild symptoms, if any, so elementary schools may get by. “So far, we don’t have evidence that elementary schools will be a problem, but the upper grades, I think, would be more likely to be a problem,” Milton said.

College dorms and classrooms are also cause for concern.

Milton said the government should think of long-term solutions for these problems. Having public schools closed “clogs up the whole economy, and it’s a major vulnerability,” he said.

“Until we understand how this is part of our national defense, and fund it appropriately, we’re going to remain extremely vulnerable to these kinds of biological threats.”

What are some things I can do to minimize the risks?

Do as much as you can outdoors. Despite the many photos of people at beaches, even a somewhat crowded beach, especially on a breezy day, is likely to be safer than a pub or an indoor restaurant with recycled air.

But even outdoors, wear a mask if you are likely to be close to others for an extended period.

When indoors, one simple thing people can do is to “open their windows and doors whenever possible,” Marr said. You can also upgrade the filters in your home air-conditioning systems, or adjust the settings to use more outdoor air rather than recirculated air.

Public buildings and businesses may want to invest in air purifiers and ultraviolet lights that can kill the virus. Despite their reputation, elevators may not be a big risk, Milton said, compared with public bathrooms or offices with stagnant air where you may spend a long time.

If none of those things are possible, try to minimize the time you spend in an indoor space, especially without a mask. The longer you spend inside, the greater the dose of virus you might inhale.

Bengaluru, Jul 18: Vendors in Bengaluru are finding it hard to earn a livelihood as the state government has allowed the sale of products only for a few hours each day. The lockdown imposed by the Karnataka government on July 14 will continue till July 22.

Speaking to ANI, Vanajakshi, a local vendor said, "We took loans from banks and small financiers to run our business. But we are finding it tough to pay back as our livelihoods have been hit."
"Because of the lockdown, no one comes to buy and markets remain vacant. There was a time when the Gandhi Nagar market was filled with customers, but now it looks like a vacant playground," she added.

Mythri, an advocate, said, "Look at the conditions of vendors. It's precarious. They do not have any business at all. Even now they have been allowed to sell products till 12 noon, which is not sufficient. It's time for the government to step in and provide assistance. If the Central government can reduce corporate taxes, why can't it help them? At least it will help them pass off these difficult times. "

"They are earning through daily wages. The government imposed lockdown suddenly. Where will they go? The city market in Bengaluru is famous. At least 8,000 people come from slum areas. People here are poor. The lockdown was done suddenly and led to problems for these people," said Congress MLA Zamil Ahmed Khan.

Referring to a recent meeting with the chief minister BS Yediyurappa, he said, "During the meeting called by the CM, I suggested that food kits must be arranged for vendors. The CM said the government is providing rice and wheat but that's not enough."

New Delhi, Feb 29: India’s economy expanded at its slowest pace in more than six years in the last three months of 2019, with analysts predicting further deceleration as the global Covid 19 coronavirus outbreak stifles growth in Asia’s third-largest economy.

The gross domestic product (GDP) data released yesterday showed government spending, private investment and exports slowing down, while there is a slight upturn in consumer spending and improvement in rural demand lent support.

The quarterly figure of 4.7% growth matched the consensus in a Reuters poll of analysts but was below a revised - and greatly increased - 5.1% rate for the previous quarter.

The central bank has warned that downside risks to global growth have increased as a result of the coronavirus epidemic, the full effects of which are still unfolding.

Prime minister Narendra Modi’s government has taken several steps to bolster economic growth, including a privatisation push and increased state spending, after cutting corporate tax rates last September.

In its annual budget presented this month, the government estimated that annual economic growth in the financial year to March 31 would be 5%, its lowest for last 11 years.

Modi’s government is targeting a slight recovery in growth to 6% for 2020/21, still far below the level needed to generate jobs for millions of young Indians entering the labour market each month.

The annual GDP figure for the September quarter was ramped up from an earlier estimate of 4.5%, while the April-June reading was similarly lifted to 5.6% from 5%, data released by the Ministry of Statistics showed on Friday.

Capital Investment Drop

In the December quarter, private investment grew 5.9%, up from 5.6% in the previous quarter, while government spending rose by 11.8%, against 13.2% in the previous three months.

However, corporate capital investment contracted by 5.2% after a 4.1% decline in the previous quarter, indicating that interest rate cuts by the central bank have failed to encourage new investment. Manufacturing, meanwhile, contracted by 0.2%.

“It appears growth slowdown is not just cyclical but more entrenched with consumption secularly joining the slowdown bandwagon even as the investment story continues to languish,” said Madhavi Arora of Edelweiss Securities in Mumbai.

Many economists said that the government stimulus could take four to six quarters of time before lifting the economy and the impact of those efforts could be outweighed by the global fallout from the coronavirus epidemic that began in China.

“The coronavirus remains the critical risk as India depends on China for both demand and supply of inputs,” said Abheek Barua, chief economist at HDFC Bank.

Indian shares sank on Friday for a sixth session running, capping their worst week in more than a decade. The NSE Nifty 50 index shed 7.3% over the week, while the Sensex dropped 6.8%, the worst weekly declines since the 2008-09 financial crisis.

Separately, India’s infrastructure output rose 2.2% year on year in January, data showed on Friday.

A spike in inflation to a more than 5-1/2 year high of 7.59% in January is expected to make the RBI hold off from further cuts to interest rates for now, while keeping its monetary stance accommodative.