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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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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An Indian Haj subsidy that did not exist!
Thank you Prime Minister Modi for ending Haj subsidy that never existed.
I completely welcome this move making the announcement, minister Mukhtar Abbas Naqvi said: “We believe in empowerment without appeasement.”Naqvi did not elaborate what he meant by “appeasement” but for decades, Haj subsidy remained a whip in the hands of right-wing parties to attack political rivals. Bharatiya Janata Party to embarrass rivals by accusing them of “appeasing” Muslims by subsiding expenses involved in the pilgrimage to Makkah and Madina. Angered by this attack, several Muslims have been demanding an end to the subsidy.
However, it is important to understand what this subsidy was and whether Muslims actually benefitted from it. In 2016-17, the government budgeted Rs 4.5 billion subsidy for around 100,000 Muslims who performed Haj last year. Each pilgrim paid around Rs 220,000 (amount varies each year) for airfare; stay in Makkah and Madina and for miscellaneous expenses. This money is paid to government-managed Haj committees which then transfers this money to other agencies. In other words, each Muslim pays for his/her own Haj expenses.
A significant chunk of money paid by Muslims goes to India’s government-owned national carrier Air India which enjoys a virtual monopoly on Haj circuit. The airline picks up passengers from around a dozen cities and flies them to Jeddah. The Air India inflates India-Jeddah tickets during the Haj season. This so-called government subsidy is used to pay for tickets that are always higher than the prevailing airfare charged by other airlines. A breakdown would show that an Air India ticket to Jeddah would cost more than a trip to Los Angeles from India. Essentially, the government takes money from one pocket and puts it back in another. Muslim have always demanded global tenders for Haj flights and for providing accommodation in Makkah and Madina..
However, while Naqvi sought to take a high moral ground by claiming that his party appeases no section of the society, his own government spends billions of rupees on organizing Hindu pilgrimages every year
Naqvi saab, this is what you learnt in Madrasa? U r Back-Stabbing Muslims. There is no 1% quality of muslim in you. After joining BJP you have lost it. First learn humanity. Almighty will give answers for all problems you have created for others.
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