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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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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With this 10 crores what are they supposed to do ? It does not work out to them.
WHAT is wrong when our ELECTED LEADERS celebrate the DIAMOND JUBILEE OF VIDHANASOUHDA..KARNATAKA PRIDE.... people /kanadigas must be PROUD of...as any one ask when Political leaders visit and crores are spent...what will be the cost ot HUGE PARTY of 75000 bike riding from all over KARANTAKA..do you think bike owners will participate without benefit.... what kind of TRAFFIC MESS WILL BE THIS... is this not MONEY... We people must consider celebration of any KARNATAKA PRIDE with out leaders...
Whether the Secretariat has heeded to CM's advice? and "..... With this, the plan to gift expensive items to the lawmakers during the celebrations has been dropped." Is it only for the time being and will they get the gifts later on in their office in a "Low Key affair" where nobody will come to know.
Aiyoo swami. Navu irode heege. Foriegn tripu (to study foriegn culture and system and implement in Karnataka), Vidhan Souda habba, seperate religion for lingayats, seperate flag for Karnataka etc etc. All these things must be done by CM and MLA's only. Otherwise the public will get angry that they have voted for non-performers. No other Govt has even thought about this. Great. Really great. Before next election, Siddu, please plan another foriegn trip along with your ministers and MLA's to study the road in developed countries. Ram Linga, neenu England di ge hogi, Scotland Yard police salehe togoli Gouri Lankesh killers na hege hidiyodu anta. Good chance to make a foriegn trip. Nobody will question. Book now. Family noo karkondu hogi. You cannot eat the food there. Your wife can make Jola da rotti with olle mosaru. Bombatu trip. If you have some other plan, then do not take your wife. Alli bread sigute.
Udaya Kumar chennagi helidiri. Innondu maatu. All these at the taxpayers money. Lancha hodiyodu allade kittu kondu tinnodu. Naachike illa ivarige.
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