Mamata claims people took money from BJP for perpetrating violence over CAA

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, Apr 24: Congress leader Rahul Gandhi has termed the government decision to freeze Dearness Allowance of Central government employees for a year as "insensitive and inhuman."

The former Congress President in a tweet said: "Lakhs and crores are being spent on the Bullet Train and New Delhi's Central Vista which should have been suspended, but the government has deducted DA of Central government employees and pensioners... It is insensitive and inhuman."

"The tragic part is that by deducting this amount from January 1, 2020 up to 30th June, 2021 for a period of 1.5 years, the government of India proceeds to deduct almost Rs 38 thousand crore from the income of these middle class government employees and pensioners, who rely completely on the pay and pensions that they receive," said Randeep Surjewala, chief spokesperson of Congress.

There are about 50 lakh such serving government employees and about 62 lakh pensioners.

"Even more tragic and objectionable is the fact that the government of India has not even spared our armed forces. The government has deducted Rs 11 thousand crore of the 15 lakh serving armed forces personnel and nearly 26 lakh military pensioners. What is their fault? They are serving the nation in times of all types of crises," said Surjewala.

The Congress alleged that the government did not spare the savings scheme.

Instead of curbing the wasteful expenditure, the government has been constantly hitting at the income of government employees and the middle class, it added.

New Delhi, Jan 18: Senior advocate Indira Jaising urged the mother of Nirbhaya to pardon the men on death row who were convicted for the 2012 gang rape of her daughter.

Jaising took to Twitter to make the request shortly after Asha Devi on Friday expressed her disappointment following a Delhi court postponed the date of the execution of the four convicts.

"While I fully identify with the pain of Asha Devi I urge her to follow the example of Sonia Gandhi who forgave Nalini and said she didn't not want the death penalty for her. We are with you but against the death penalty," Jaisingh tweeted.

While I fully identify with the pain of Asha Devi I urge her to follow the example of Sonia Gandhi who forgave Nalini and said she didn’t not want the death penalty for her . We are with you but against death penalty. https://t.co/VkWNIbiaJp

— Indira Jaising (@IJaising) January 17, 2020

Asha Devi lashed out at Jaisingh suggesting pardon for the convicts. "I can't believe how Indira Jaising even dared to suggest such this. I met her many times over the years in Supreme Court, not once she asked for my wellbeing and today, she is speaking for convicts. Such people earn livelihood by supporting rapists, hence rape incidents don't stop," Asha Devi told ANI.

Nalini was arrested and convicted for her role in the assassination of former prime minister Rajiv Gandhi in 1991.

Earlier on Friday Asha Devi had lashed out at the courts and the government stating that "the same people who had in the year 2012 gone around participating in rallies and raised slogans for women's safety are playing with the death of my daughter for their political gains. They have stopped the execution for their political gains."

The death-row convicts who were earlier slated to be executed on January 22 at 7 am are set to be hanged on February 1 at 6 am.

Asha Devi rued that the convicts got what they wished for. "I will not be satisfied until they are hanged," she added.

Four convicts, Vinay, Akshay, Pawan and Mukesh were convicted and sentenced to death for raping a 23-year-old woman in a moving bus in the national capital on the intervening night of December 16-17, 2012.

The victim, who was later given the name Nirbhaya succumbed to injuries at a hospital in Singapore where she had been airlifted for medical treatment.