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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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
The NIA had named Zakir Naik, IRF, and others in an FIR registered under anti-terror law Unlawful Activities (Prevention) Act on Friday.
Comments
It only shows that PROPHET MUHAMMED pbuh, the final messenger to the whole of MANKIND Spoke the TRUTH...
He said : In the end time LIES will be accepted as truth and TRUTH will be accepted as LIES. People are IGNORANT of the CREATOR that's why the EVILs find easy to trap the people With LIES and DECEPTION. ... Most of the people who doesnt use their intellect are falling to the LIES of the arrogant leaders.. and believing it as TRUTH... infact if we research what ZN says is all TRUTH and FACT from not only from Muslim scripture but also other religious scriptures.
But its a temporary enjoyment... for the falsehood... if not repented to God ... They will surely see that ALLAH's plan was the best. Muslims should be patience on their arrogance and fight lawfully.
But they plan, and Allah too plans. And Allah is the best of planners.
Who is the creator of this Univers and
the creator of you & me.
When people are busy in exchanging their old currencies, the Govt. is banning Dr.Zakir Naik's NGO and slowly taking over his Schools.
BJP needs place to hide their black money. So they are byforce taking over zakir's house to hide their money.
BJP needs place to hide their black money. So they are by force taking over zakir's house to hide their money.
shame on NIA who is acting on centre for their shameless ideology ...to curb a peace lover and a peace preacher ..... does it mean that every Muslim become TERRORIST instead of Peace lover like Dr.Zakir Naik ?
i think its time to become that soon . as INDIA will see bloodiest Civil War as RSS wishes to hold onto its 2025 Brahmin Rashtra agenda to come true (which is dream only) . but if ARMY is sasffronised only
Movement like Popular front, SPDI , komu souharda vedike .DYFI,SFI,CFI, Dalit Panthers, Naxal . pragathipara vedike will always there to defend the Nation from such foolish rulers ....
Jai Hind
Asaram Bapu and Zakir Naik both are same
Do you know how????
Their followers are telling that they are innocent and blaming government ...Ha ha ha
Dr. Zakir Naik is a student of Comparative religions. He preaches oneness of God, peace and harmony quoting verses from Quran, Bible and Vedas. Anti Islamic elements cannot equate him logically, and they cannot tolerate his popularity.
Targeting innocent Muslims or peaceful Muslim organizations is not at all a good step. Fascists with their biased policies will only harm the peace in the nation.
India being a plural society, Ruling parties or any other parties why dont you support the UNITY IN DIVERSITY towards the benefit of our beloved nation.
Good move by government...
I think this may be the one of reason for Demonetization of 500 and 1000 rupees, Saffron Government attacking A muslim daayi and his organization under the darkness of 500 and 1000 currency, Actually Muslim does not benefit much from Dr. Zakir as he is not a fiqh scholar, our non muslim brothers missed the opportunity to understand the truth through him, But nothing to worry, If Allah wish to guide one, No one can misguide him,
you can ban legend and great leader like DR.ZAKIR NAIK but you cannot stop or prevent spreading ISLAM all over the world. if you hold one DR.ZAKIR NAIK thousands of other DR. ZAKIR NAIK will come up with more powerful SPEECHES and awareness.
so stop doing unwanted activities and actions..
Dr Zakir should have come to India, since he is away from India authority has more chances of squeezing his organisations. if he is guilty court will punish him. it should not be the situation where he gave stick and ate beatings. Only Allah knows the truth and Allah will guide the best..
I DONT think he can do unwanted activities,
any way
Truth will prevail and evil will perish soon
Political Power is the Master key to open the doors of Justice. hope the Indian Muslim Community Stand together under one political Platform . then only can defeat the Fascist ideology. in india muslim's issue is not just the religious one, its full of Politics which Muslims never realized. let the community stand on their own. now the question is where are those champions of Secularism ..???
This is the lab test of communal anti India rss group. Now by false case they will start to ban other Islamic organization. They are planners are full training under Jews group.
Whole IndIan citizens aware of their intention devide and rule for the sake of so called upper case.
But God will by the supper of peace loving Indins it will not happen.
Now the young cm padnavi of rss more active with anti India policy.Hope hard woring Mumbaikar will stand with peacefull life.
Jai Hind!h3
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