13 booked for firing air shots at Mahatma Gandhi's effigy

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.

New Delhi, Jul 19: Blaming the BJP for the political drama in Rajasthan, senior Congress leader Digvijaya Singh on Sunday asked Sachin Pilot not to leave the grand old party.

In an interview to news agency, the former Madhya Pradesh chief minister said Pilot should not follow Jyotiraditya Scindia into the BJP, as he has bright future in Congress.

His remarks follow Pilot's open rebellion against the Ashok Gehlot government, which has been on shaky ground with at least 18 legislators backing the rebel leader.

Pilot was sacked as Rajasthan deputy chief minister and the state Congress chief recently and the Congress has accused the BJP of making efforts to topple the Gehlot-led government by indulging in horse-trading.

"The BJP is behind the crisis in Rajasthan," Singh said.

The Congress veteran said he tried to call Pilot but his calls and text messages went unanswered.

"Age is on your side. Ashok (Gehlot) may have offended you, but all such issues are best resolved amicably. Dont make the mistake that Scindia made. BJP is unreliable. Nobody who joined it from any other party has succeeded there," Singh said.

He said this is the first time that Pilot hasn't responded to him.

"Sachin is like my son. He respects me and I also like him. I called him three-four times and also texted him. He didn't revert. He used to respond immediately earlier," he said.

"It is good to be ambitious. How can one move forward without having ambitions, but along with ambition, one must also have commitment to your organisation, ideology and the nation," Singh said.

For latest updates on the Rajathan Political Crisis, click here

"I heard that he (Pilot) may form a new party. But what is the need for it. Has Congress not given him anything? He was made an MP at 26, a Union minister at 32, the state Congress president at 34 and deputy chief minister at 38. What else does he want? Time is on his side," Singh said.

If Pilot had any issue, then as the state party unit president, he should have called a meeting and discussed the matter, he said. Pilot could have involved Congress national general secretary and Rajasthan in-charge Avinash Pande in talks with Gehlot to resolve differences, he added.

"If you have faith in your legislators, why have you have confined 18-19 of them in ITC Grand hotel at Manesar in Haryana," Singh said.

This is the same hotel where the BJP kept MLAs from Maharashtra, Karnataka and Madhya Pradesh (during political dramas in those states), he said.

Pilot should forget whatever has happened, come back and sit across the table to discuss how Congress could be strengthened, he said

New Delhi, May 6: Around 39 crore people have received financial assistance of Rs 34,800 crore amid the COVID-19 lockdown under the Pradhan Mantri Garib Kalyan Package (PMGKP) as on May 5, the government said in a statement.

These people received the assistance, which was announced by Union Finance Minister Nirmala Sitharaman on March 26 to protect them from the impact of the lockdown due to COVID 19, via digital payment infrastructure.

The swift implementation of the free food grain and cash payment package under PMGKP is being continuously monitored by Central and state governments. Also, Fintech and digital technology have been employed for swift and efficient transfer to the beneficiary.

As per the data provided by the government, Rs 16,394 crore front-loaded towards payment of the first installment of PM-KISAN was provided to 8.19 crore beneficiaries.

Rs 10,025 crore credited to 20.05 crore (98.33 per cent) women Jan Dhan account holders as first installment and Rs 2,785 crore credited to 5.57 crore women in the second installment.

Further, Rs 1,405 crore was disbursed to about 2.82 crore old age persons, widows and disabled persons and Rs 3,492.57 crore financial support was given to 2.20 crore building and construction workers.

Moreover, foodgrain has been distributed, covering 60.33 crore beneficiaries in all 36 Union Territories and states till April and 12.39 crore beneficiaries by 22 states/UTs for May. Pulses have been distributed so far to 5.21 crore household beneficiaries out of 19.4 crore such beneficiaries.

Over 5 crore cylinders have been booked under the Pradhan Mantri Ujjwala Yojana (PMUY) and 4.82 crore free cylinders already delivered to beneficiaries.

While 9.6 lakh members of Employees' Provident Fund Organisation (EPFO) has taken benefit of online withdrawal of non-refundable advance from EPFO account amounting to Rs 2,985 crore, 24 per cent EPF contribution transferred to 44.97 lakh employees account amounting to Rs 698 crore.

In the current financial year, 5.97 crore person's man-days of work generated under MNREGA scheme and Rs 21,032 crore were released to states to liquidate pending dues of both wage and material.

Insurance scheme for health workers in government hospitals and health care centres has been operationalised by New India Assurance covering 22.12 lakh health workers.