Coronavirus can go up to 8 metres from exhalation, linger in air for hours: MIT scientist

News Network
April 2, 2020

The current physical distancing guidelines provided by the World Health Organisation (WHO) and by the US Centers for Disease Control and Prevention (CDC) may not be adequate to curb the coronavirus spread, according to a research which says the gas cloud from a cough or sneeze may help virus particles travel up to 8 metres. The research, published in the Journal of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.

Study author, MIT associate professor Lydia Bourouiba, warned that droplets of all sizes can travel 23 to 27 feet, or 7-8 metres, carrying the pathogen.

According to Bourouiba, the current guidelines are based on "arbitrary" assumptions of droplet size, "overly simplified", and "may limit the effectiveness of the proposed interventions" against the deadly pandemic.

 She explained that the old guidelines assume droplets to be one of two categories, small or large, taking short-range semi-ballistic trajectories when a person exhales, coughs, or sneezes.

However based on more recent discoveries, the MIT scientist said, sneezes and coughs are made of a puff cloud that carries ambient air, transporting within it clusters of droplets of a wide range of sizes.

Bourouiba warned that this puff cloud, with ambient air entrapped in it, can offer the droplets moisture and warmth that can prevent it from evaporation in the outer environment.

"The locally moist and warm atmosphere within the turbulent gas cloud allows the contained droplets to evade evaporation for much longer than occurs with isolated droplets," she said.

"Under these conditions, the lifetime of a droplet could be considerably extended by a factor of up to 1000, from a fraction of a second to minutes," the researcher explained in the study.

The MIT scientist, who has researched the dynamics of coughs and sneezes for years, added that these droplets settle along the trajectory of a cough or sneeze contaminating surfaces, with their residues staying suspended in the air for hours.

"Even when maximum containment policies were enforced, the rapid international spread of COVID-19 suggests that using arbitrary droplet size cutoffs may not accurately reflect what actually occurs with respiratory emissions, possibly contributing to the ineffectiveness of some procedures used to limit the spread of respiratory disease," Bourouiba wrote in the study

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News Network
February 5,2020

Chennai, Feb 5: In order to ensure housing for all, the Madras High Court has proposed ban on non-resident Indians from purchasing houses in India, prohibit speculative sale, and impose 100 per cent extra stamp duty on purchase of second house.

The court on its own impleaded the Union housing and finance ministries as party respondents.

It has directed them to answer a series of questions including as to how many families have basic amenity of housing in India as well as in Tamil Nadu, population and housing ratio in the country and in the state, when 'Housing for All' mission of the central government would be achieved.

"Why the government does not consider imposing such restrictions to control escalation of house prices and to provide a house to every family in the country, a division bench of Justice N Kirubakaran and Justice Abdul Quddhose wondered.

Directing the authorities to inform as to whether the central and state have got special schemes to provide housing for the marginalized and economically weaker sections including SC/ST communities, the bench has also sought the details of the number of families that possess more than one house.

"Why the governments do not restrict families/individuals from purchasing/possessing more than one housing unit/flat/plot till "Housing for all" is achieved?

Why not the government charge 100 per cent more or extra stamp duty to discourage buying more than one house by a family while purchasing second house?

Why not the government conditionally allow the families to purchase more than one house provided the said family pays 100 per cent extra statutory dues like property tax, electricity charges, water and sewerage charges on the second property?" the bench said.

This apart, the court also wanted the authorities to know as to why it should not prohibit the NRIs from purchasing houses in India to bring down the cost of housing.

Justifying its directions, the court said "Lakhs and lakhs of people are living on platforms, roads, and cement pipes, slums, under the trees and on banks of water bodies without proper shelter and basic amenities and safety."

It is true that the Centre had taken a policy decision to provide housing unit to every family.

It should be achieved at the earliest, the court said, adding it could become fruitful when restrictions are put on persons who hold more than one housing units.

The court passed the order while hearing an appeal moved by the Tamil Nadu Housing Board challenging a single judge order against acquisition of about 369 acres of private land in Thudiyalur and Vellakinar areas of Coimbatore for a housing scheme.

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Suresh SS
 - 
Wednesday, 5 Feb 2020

We believed that only Indian Govt. ministers, MP and MLAs has this disease, now it is spreading everywhere even Indian High courts. it is certainly very harmful virus  

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News Network
April 29,2020

Bantwal, Apr 29: Two people were injured after the truck laden with poultry feed rammed into the compound wall of after catching fire on Wednesday, at Marnabailu near Melkar.

Police said the injured were the driver and an assistant in the truck. They were admitted to a private hospital at Mangaluru.

However, it is not yet clear whether the truck transporting poultry feed from a company at Kandur caught fire after colliding against the electric pole or with the compound wall.

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News Network
April 17,2020

Bengaluru, Apr 17: The Karnataka government has announced the purchase of an additional two lakh rapid test kits for COVID-19 detection at a task force meeting on Thursday.

Home Minister Basavaraj Bommai and other senior officials were present at the task force meeting chaired by Deputy Chief Minister Dr CN Ashwathnarayan.

The Chinese government has agreed to supply rapid test kits to an officially listed company, which will increase the number of tests once it arrives, Ashwathnarayan said.

Moreover, 250 kiosks will be set up in the state to collect saliva samples of a person with COVID-19 symptoms. Such kiosks will be launched one-by-one in taluks of the state.

Ashwathnarayan explained that this would increase the sample collection process and prevent the spread of disease.

Ashwathnarayan said the purchase of the required 25,000 RT-PCR kits was also approved.
He stated that COVID-19 patients should be treated at government-appointed hospitals. A separate coronavirus helpline will be made operational to address the queries of people, Ashwathnarayan said.

During Ramadan, it has been decided not to allow mass prayers, he said. And added that tracing of cases related to the Tablighi Jamaat meeting in Delhi has been completed in the state.

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