Modi walks in the wild with Bear Grylls

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, Jun 11: Rajasthan chief minister Ashok Gehlot has obliquely hinted that the opposition Bharatiya Janata Party (BJP) is pulling out all stops to destabilise the Congress-led government by luring some of the ruling party’s members of the legislative assembly (MLAs) with Rs 25 crore each.

He alleged that the BJP’s plan is similar to that of toppling the erstwhile Kamal Nath-led government in Madhya Pradesh (MP) and some of his party lawmakers have been offered Rs 10 crore each in advance of the promised sum of Rs 25 crore.

The CM made these allegations while speaking to media persons late on Wednesday night, when the Congress took its 107 party MLAs and 13 independent lawmakers to a resort located on the outskirts of Jaipur for a meeting ahead of the upcoming Rajya Sabha polls for three seats from the desert state slated to be held on June 19.

The 120 MLAs will be shifted to the resort on Thursday.

“Our MLAs are intelligent, alert, and united. Rajasthan is the only state in the country, where 13 independent MLAs supported our government for neither exchange of any money nor post. However, the condition on which our MLAs left the party for the BJP in MP is not good,” Gehlot said.

Rajasthan government’s chief whip Mahesh Joshi in a complaint to the director-general, anti-corruption bureau (ACB), has alleged attempts to poach Congress MLAs and the independent lawmakers, who are supporting the Gehlot-led government.

“Attempts are being made to destabilise the government in Rajasthan on the lines of Karnataka and MP,” Joshi alleged.

Gehlot said that he would hold another round of meeting with the 107 Congress and 13 independent MLAs on Thursday.

The CM also targeted Prime Minister Narendra Modi, alleging that the Upper House elections were postponed under pressure because the BJP could not poach an adequate number of MLAs in Rajasthan and Gujarat.

He blamed the saffron party for its lack of faith in democracy, as it has ensured the resignation of eight Congress MLAs in Gujarat since March, including three earlier this week.

Mukesh Pareek, BJP’s state spokesperson, refuted the allegations levelled by CM Gehlot against his party and asked the ruling Congress to give evidence of alleged poaching of its and independent lawmakers.

‘The Congress has failed to manage its own house. There is growing resentment in the party’s rank and file over its failed national leadership,” Pareek alleged.

New Delhi, Jun 17: Police Surender Jeet Kaur, Assistant Commissioner of Delhi Police Surender Jeet Kaur, has held herself responsible for the death of her husband Charan Jeet Singh, who succumbed to Covid at a hospital in Delhi.

“My husband didn’t step out of the house when the lockdown started, but I went out daily because of my job… I will never be able to forgive myself,” Kaur on Tuesday, a day after losing her husband.

54-year-old Singh, a resident of Lajpat Nagar and a businessman, is survived by his wife and their 26-year-old son who lives in Canada.

Kaur, 57, ACP (Crimes Against Women) in the South-East district of the Delhi Police, is also ACP (Covid Cell) of the district. On May 20, five days after Kaur tested positive for the virus, her husband Singh tested positive, followed by the ACP’s 80-year-old father on May 24.

All of them had symptoms and while Kaur and Singh were admitted to Indraprastha Apollo hospital, her father was admitted to Max hospital in Saket. On May 26, Kaur returned home after recovering from the virus.

Kaur said, “I last spoke to my husband on May 22 night, when we were both admitted in the hospital in different wards. The doctor called me and said that my husband needs to be put on ventilator support. I had a video call with my husband. He was breathless and told me that his oxygen level was dropping. He showed me the monitor, the doctors in the room, and then said he was having trouble speaking and that he would send me WhatsApp messages.”

A day after he passed away, Kaur recalled the messages that Singh sent her just before being put on ventilator support. “He started sending me details of our finances, accounts… I told him to stop and asked him why he was telling me all this. He said I needed to know… Maybe he feared he wouldn’t come back. I prayed every day, at temples, mosques, churches and gurdwaras for him. I am devastated that he’s gone. We were to move to Canada to live with our son in 2023 after my retirement. We had so many plans.”

Kaur’s brother Maninder Ahluwalia said the hospital tried plasma therapy but Singh didn’t respond to the treatment. “He had diabetes and high BP, but those were always under control. We were hopeful,” he said.

The couple’s son joined on video call from Canada to watch his father’s last journey from the ambulance to the entrance of the crematorium. “My son couldn’t attend his father’s last rites because there are no flights… It’s so unfortunate,” said Kaur.

Friends and family remember Singh as a “jolly, disciplined and brave man”, while Kaur said he was the “perfect partner”. She said, “When I was an SHO-rank officer, I would work for 36 hours straight some days, and he would handle the house and our son who was growing up. I would miss family functions and important occasions but he would always go and make up for my absence. I was able to do this job for decades because of his support.”

On Tuesday afternoon, Singh was cremated in the presence of close family and members of the police fraternity. “The DCP and the Joint CP called me daily to enquire about my husband, other police officers too. I am grateful for their support. They didn’t let me feel alone for a single day,” said Kaur.