Mangaluru is a peaceful city; media focusing only on negative things: Top cop

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, Jan 8: Accusing the BJP of running a "fake news factory" at full potential, former chief minister Siddaramaiah on Tuesday said according to reports only Rs 669 crore of additional flood relief funds are being released by the Centre for the state as opposed to the ruling party's claim of Rs 1,869.85 crore.

Reacting to his attack, the State BJP unit, without clarifying on the actuals of the amount being released, said it believed in speaking the truth and not spreading lies.

Siddaramaiah, leader of the opposition in the state assembly, tweeted: "Reports from State govt officials tells that only Rs 669 crore of addl funds (sic) are released in 2nd instalment as opposed to the claim of Rs 1870 Cr by @BJP4Karnataka leaders. At a time when manufacturing industries are closing, BJP's fake news factory is running at full potential!!"

Calling BJP leaders "devotees of the God of lies," he said in another tweet that Prime Minister Narendra Modi released an additional Rs 669.85 crore moved by Chief Minister B S Yeddyurappa's plea, taking the total amount to Rs 1,869.85 crore. He said it was funny that they were attempting to depict the total relief amount as 1200+1869.85 equalling to Rs 3,069.85 crore.

Siddaramiahs tweet was in response to Karnataka BJPs tweet last night claiming that the High-Level Committee (HLC) Chaired by Union Home Minister Amit Shah has approved the release of Rs 1869.85 crore as central assistance to the state towards flood relief. This was in addition to Rs 1200 crore already released by the Centre in October 2019, the BJP unit had said.

On Monday, the HLC had approved additional central assistance to seven states affected by floods last year, from National Disaster Response Fund (NDRF), including Karnataka.

While a PIB release states that Rs 1869.85 crore was approved for Karnataka, according to sources in the state government the figure was inclusive of Rs 1,200 crore released in October. Earlier in the day, Chief Minister B S Yediyurappa while expressing confidence that more funds will be released in later stages, maintained that Rs 1869 crore has been released in addition to Rs 1,200 crore earlier, and thanked Prime Minister Narendra Modi.

"...funds will never be enough, they (central government) will release in stages, they have released such big amount- earlier Rs 1200 crore, now again Rs 1869 crore- I thank Prime Minister Narendra Modi for it," he told reporters here.

Revenue Minister R Ashoka said the state government will press for more funds in the days to come, and the state government will fulfil promises made to those hit by floods.

Karnataka faced two spells of unprecedented rains and floods last year, resulting in widespread damage to life and property, following which the state government had submitted a report to the centre claiming loss was to the tune of about Rs 38,000 crore.

Reacting to Siddaramaiah's attack of "fake news factory" against it, the state BJP tweeted "Ayyo @siddaramaiah Avare, We surrender to You as we are incapable of running Fake News Factory like You or @INCIndia.

We believe in speaking the Truth like Gandhiji, not spreading lies like Goebbels. Kannadigas still remember the "Lies Bhagya (a scheme)" you gave them as CM from 2013-18."

Bengaluru, Jan 6: Karnataka Chief Minister BS Yediyurappa on Sunday launched the ruling BJP's outreach campaign in favour of the Citizenship Amendment Act (CAA) in Bengaluru.

"The CAA came into being after its amendment bill was passed in Parliament during its winter session with the support of major political parties. It is meant to give shelter and protection to Hindu minorities facing persecution in Pakistan, Bangladesh and Afghanistan. It does not take away any rights of Indians," Yediyurappa told residents on a door-to-door campaign in the city.

Accusing the opposition Congress of misleading the people on the CAA and inciting its protesters to indulge in violence, the chief minister said the Act does not cause any problem to all sections of Indians.

"There is no question of taking away anyone's citizenship, including that of Muslims, as the Act only facilitates the return of the Hindus persecuted in the neighbouring countries in the sub-continent," he asserted.

State deputy chief minister H.C. Ashwath Narayana and party's Bengaluru Central Lok Sabha member P.C. Mohan accompanied the chief minister on his outreach programme in some residential and commercial areas of the city.

As part of the nationwide campaign in favour the CAA, the party's state unit president Nalin Kumar Kateel and the state's dozen cabinet ministers led the campaign in other cities across the southern state.

"An awareness campaign will be peacefully held daily till January 15 across the state to counter the protests against it by students and other people at the behest of the Congress and Left parties," Kateel told reporters at Mangaluru, 350km southwest of Bengaluru.

Kateel is a BJP Lok Sabha member from the state's Dakshina Kannada seat.

Besides contacting the people directly at their doorstep through the party's leaders, cadres and supporters, the BJP is reaching all sections of society through social media and by holding pro-CAA rallies in all the 30-district headquarters across the state over the next 10 days.

"About 300 leaders and cadres of the party have fanned out in cities and towns across the state to explain the provisions of the CAA to the people and clarify their doubts, as the protesters were misleading them with wrong information about it," reiterated Kateel.

The CAA came into being after the President enacted the a law to give citizenship rights to Hindus, Sikhs, Jains, Parsis and Christians who have been allegedly persecuted as minorities in Afghanistan, Bangladesh and Pakistan over the last seven decades.

"A deliberate misinformation campaign has been carried out against the CAA by vested interests, misguiding a section of college/university students, their faculty, activists and members of the minority community on its provisions so as to create unrest and trigger violence in the country," Ravikumar claimed.

The ruling party also held rallies and public meetings in major cities like Mysuru, Mangaluru, Hubballi, Belagavi, Bellary and Kalaburagi across the state and enlightened the people on the benefits of the CAA.

"As social media is all-pervasive with greater reach and better impact, we are also reaching about one crore people of all ages through Kannada, Hindi and English script, messages and audio/video clips in the state during the fortnight campaign," added Kateel.