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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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
Comments
Well Done Dr. Zakir Naik. We had enough of this media misrepresenting the facts to please the people who are in power & spread the hate in common man, and help the fulfillment of the Hidden agenda of the corrupt politicians. Thanks for taking this great step. A peace loving man of any religion will support you...... Insha Allah Victory will be yours.
Please watch his team member junaid khan recent interview about his income and behavior with others
Even his conversion is well planned drama
This bussiness is much better than dargah bussiness
It is good that the media houses are being sued for defamation. Media should stop slandering and making false stories against people. Only when an FIR / case is registered, should they break the story.
This has been going on for such a long time and a stop has to be put. Arnab Goswami and his type have taken a beating out of this case. Even the government has lost a lot of credibility because of this case.
As per naik media aired his videos which are out of context to mislead the people!!!!!!
If so my question is then why zakir naik blind followers are urging other people to watch his videos in youtube if dey are out off context?...as per his followers if some1 converts to islam after watching his videos then its good for socity if he becomes terrorist den its out of context...hahaha
Shame on RSS agent Arnab Go cow swami,
you will not come up'' time will come your realy face will come out and public will spit your face,for money and power not lift up god know the reality and he is the planer.
Well done.. WE ARE WIth U Dr. Zakir Naik...
People are Fooled since decades with manipulating the facts and presenting to the public...
Presenting news with suits and ties and make up doesnt make anybody Good and Trust worthy... We should look at who is behind it... there are many corporations who play with the minds of people... who lobby all this evil propagands even the cheddis have fallen to this category.
We should teach this decievers a lesson...
But ALLAH has power over all things... Those who know ALLAH, will never be in FEAR of any situation.. May ALLAH make us one of them.. it is the greatest blessing from the CREATOR of all the Exists.
Insha Allah, you will suceed Zakir Saab, These dogs like Arnab gooo sami, Naren should be taught a lesson for ever...... WELL DONE. WE WISH GOOD LUCK....
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