Man hurt after eating burger having glass shards

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.

Follow latest updates on the Covid-19 pandemic here

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.

Mandya, Jun 14: In a tragic incident, a woman and her two children were drowned in a pond at Beeranahalli village in Nagamangala taluk of this district on Sunday.

Police said that the deceased have been identified as Geeta (40), and her two children Savita(19) and Soumya(14).

Savaitha is a degree student while Soumya was studying in 9th standard. The trio drowned in a pond where they had gone to wash their cows. The locals rushed to the spot and tried to rescue them but could not save.

When it comes to the economy, dark days do loom large over India. May it be growth (lowest since 2008), inflation (highest in the last six years), or revenue collection (lowest in 10 years), the Indian economy is faltering. Hence, there is little leeway that can be assumed in the incumbent Union Budget 2020 (the first of the decade) if the economy needs to be boosted.

While presenting the decade's first Budget for India, finance minister Nirmala Sitharaman said on Saturday in Parliament:

Taxation

•             AADHAR based tax verification introduced

•             Review of customs duty exemptions in September 2020

•             GST refund process simplified

•             Electronic invoice implementation in phases

•             New digital scheme for tax litigation

•             PAN to be instantly allotted online against Aadhar

•             Vivaad se Vishwas Scheme: Defaulter to pay only disputed tax and no penalty or interest by 31 March 2020, post which additional amount can be paid till June 2020

•             Measure to promote affordable housing - tax holiday extended for developers

•             Concession on real estate transactions

•             Turnover threshold for audit raised to Rs 5 crore from 1 crore

•             Company audit requirements eased

•             Taxes on ESOPs (employee stock ownership) in start-ups deferred by 5 years

•             100% per cent tax exemption

•             Corporate Tax at 15%

•             Dividend Distribution Tax removed, dividend taxed only for recipients

•             No tax for 0-5 lakh

•             30% above 15 lakh

•             25% for income between Rs 12.5-15 lakh

•             20% for income between Rs 10-12.5 lakh

•             15% for income between Rs 7.5-10 lakh

•             10% for income between Rs 5-7.5 lakh, against the prevailing 20%

•             A new, optional simplified personal income tax regime for those not seeking exemptions

Major steps and initiatives taken by the government in finance

•             3.8 percent fiscal deficit estimated

•             GDP nominal growth expected at 10 per cent

•             Govt to sell part of holding LIC via IPO (initial public offering)- partial LIC disinvestment

•             Partial credit guarantee for NBFCs

•             New law for netting of financial contracts

•             Mechanism to end liquidity crisis

•             NRIs (non resident Indians) can invest in certain govt securities

Aspirational India: Caring society

•             App-based invoice financing loans for MSMEs

•             Amendment to Factoring Regulation Act to aid MSMEs

•             Pension Fund Regulatory and Development Authority (PFRDI) Act amendments

•             No criminal liabilities for civil acts

•             Auto-enrolment in universal pension scheme

•             5958 cr allocated for Ladakh

•             30757 cr allocated for J&K

•             Insurance for depositors raised to 5 lakh from 1 lakh

•             Robust mechanisms in place to monitor all PSU banks

•             Depositors’ money safe

•             100 cr for hosting G20 in 2022

•             National Recruitment Agency to be set up

•             Tax payers’ charter to be enshrined in statutes

•             Amendments for Companies Act

•             Tax payer charter proposed to free citizens from tax harassment

•             Businesses should have confidence that system is fair

•             4400 crore allocation for clean air and climate change policy

•             Aim to reduce carbon footprint - Warning to old thermal plants

•             Committed to preserve environment, tackle climate change

•             23150 crore for culture ministry

•             2500 crore for tourism sector

•             Institute of Heritage and Conservation to come up soon

•             Aim to set up more museums

•             5 archaeological sites to be made iconic

•             Proposal to end manual scavenging

•             53700 crore for welfare of STs

•             85000 crore for SCs and OBCs for 2021

•             35600 crore for nutritional schemes

•             Gross enrollment ratio of girls higher than boys in elementary level

•             Beti Bachao, Beti Padhao - tremendous results

Aspirational India: Infrastructure and economic development

•             Further reforms for transparent price discovery for natural gas

•             22000 crore for power sector

•             8000 crore for quantum technology in next 6 years

•             Two national level science schemes

•             Expand Jan Aushadhi Scheme

•             1 lakh gram panchayats to be connected via Bharat Net

•             6000 crore for Bharat Net

•             Data Centre parks to be set up across the country

•             National Gas Grid to be expanded

•             Reforms to help stressed DISCOMS (distribution companies)

•             Delhi-Mumbai Expressway by 2023

•             100 more airports by 2024

•             Plans to energise economic activity along river banks

•             Need to enhance sea ports

•             High Speed Mumbai-Ahmedabad train

•             More Tejas-type trains

•             4 station redevelopment projects under PP model

•             2000 km of strategic highways to be built, 11000 km of track electrification

•             Accelerated development of highways

•             National Logistics Policy to be released soon

•             Big push on infrastructure - 100 lakh crore

•             National Technical Textiles Mission to be set up

•             1480 crore outlay for textile sector

•             27300 crore for industrial development by 2021

•             Digital refund of duties for exporters

•             Boost domestic manufacturing - electronic equipment, mobile phone, medical devices

•             5 new smart cities in collaboration with states

•             Investment clearance cell to be set up for end to end facilitation

•             Entrepreneurship has been the strength of India

Aspirational India: Education and skills

•             High need for medical teachers and paramedics

•             Internships for engineers in panchayats

•             Rs 99300 cr for education sector

•             Large hospitals to be encouraged to start PG courses

•             Attach medical colleges to district hospitals

•             National police university to be set up

•             IND-SAT programme for overseas students for studying in India

•             New courses in 159 universities by 2026

•             Focus on education for jobs

•             Propose a fresh education policy

•             Urban local bodies should give opportunities to new engineers

•             Education needs more finances

Aspirational India: Healthcare

•             AI (artificial intelligence) to be used for Ayushman Bharat Scheme

•             69000 crore for health sector

•             Propose to set up more hospitals

•             Holistic vision for national healthcare

Aspirational India: Agriculture, Irrigation and rural development

•             Need to liberalise farm markets

•             108 million metric tonne milk production by 2021

•             2.83 lakh cr allocation for agriculture and irrigation

•             Propose raising fish production to 200 lakh tonne

•             Zero budget national farming

•             NABARD refinance scheme to be expanded

•             Village credit card scheme

•             Agriculture credit target for 2020 set at Rs 15 lakh crore

•             Village storage scheme for farmers, zero budget natural farming

•             Dhanya Lakshmi scheme for women in villages

•             Krishi Udaan by civil aviation ministry for air transport of such commodities over longer distances

•             Indian railways to set up 'kisan rail'

•             Govt to provide help to geo-tag warehouses

•             Financial inclusion has helped raise farm incomes

•             Plan for 100 water stressed districts

•             Scheme for 20 lakh farmers to set up solar pumps

•             Doubling farm income - model agricultural land leasing act, balanced use of fertilisers, solar pumps for 20 lakh farmers

Budget 2020 and its three focuses

•             Budget's first focus is 'Aspirational India'. Second focus: economic development for all. Third focus: building a caring society.

•             FDI at 284 billion dollars, achieved 7.84% growth

•             GST formalised the economy

•             Efficiency gained in logistics

•             16 lakh new tax payers added

•             Fundamentals of economy hold strong

•             Scaled up implementation of pro-poor schemes

Key challenges FM faces

•             India needs to grow by 9 per cent to 10 per cent a year to become the $5 trillion economy by 2024, as projected by the government. The government is now forecasting growth will come in at 5 per cent

•             The IMF, which had originally predicted 6.1 per cent growth for India in 2019, has revised that downwards to 4.8 per cent

•             The government’s likely to miss its fiscal deficit target for the current fiscal year of 3.3 per cent and hike its target to as much as 4 per cent for the next financial year

•             India will struggle to achieve 5 per cent GDP growth in 2020 - Economist Steve Hanke, Johns Hopkins University

•             Investment is forecast to grow at less than 1 per cent -- the lowest since 2004-05

•             India's unemployment rate rose to 7.5 per cent during September-December 2019 quarter, according to data released by think-tank Centre for Monitoring Indian Economy