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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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
"People of the country are demanding a Ram temple, but how will a Ram temple be made if there are no Ram-bhakts in the country," he said while addressing a programme at Devbad area of Saharanpur district.
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PUTTIDINA JOKULEG YER NINNA AMME TUPENA
Let us start with Ur Master.
This KKB again started to B--k
Why people cast their valuable vote in favor to this uncultured mannerless creatures. Most of the elected mp's are with same attitude and mind set. For our unite India all should kick them out from country like India.
KKB - KUTTE KA BACCHA.
during partition muslims in India was 36% and part of them migrated , so now decreased to 15%.. hindus in pakistan migrated to India , still migrating , hindu population might have decreased there also....even then minority hindus enjoying reservation in politics , education . etc
Here is one more....these BJP leaders are out of mind. Someone is saying change the religion (Ghar wapsi) and someone is asking to go to pakistan someone wants hindus to show their mardangi. Rubbish ppl with fools followers
good news for modi and baba ramdev......
U start the lead, let followers take your step
Vegans are deficient in many important nutrients like Vit B12, Creatine. Studies shows that Vegetarians have much lower levels of Testosterone than their meat eating counterparts
There was a time when the enemies of mankind spread the LIES of accessive Population is harmful to earth and they spread the fear & introduced \hum do hamare do\". --- We see the results that most of those who never read about \"the revelation of God who gave the life\" have been trapped in this depopulation situation and NOW they are forcing their community to make children... without any financial aid.
ALLAH the creator of all that exists speaks about the life and death of every thing that he created..
one ayat of quran below: (17:31)
Do not kill your children for FEAR of POVERTY. We will provide for them and for YOU. Surely killing them is a great sin...
Those who trusted God never fall trap to such fear....
At that time and even now Many abortion took place to live a worldly enjoyment but in their old age people desired that they had many childrens... which they regret of not having 3 or more children..
Dont forget, India and China with most population are the most fast growing economy today.. Nothing to feel ashamed... only the ruling few will put fear on the people to control their evil agenda.."
have beef consumption .....for population increment
Raj Takre did not oppose our players to play against Pakistan hokey match in KL....HYPOCRISY....
India's population is 1.5 Billion......can India afford another 1.5 billion....to build Ram Temple....these are politicians gimmick to cheat poor innocent voters....very sad....
First eat madam posts and cashews....ha haa.....and ask for strong guns....
Giri babu
How many children U have or How much children U planned? Let the Cheddi members know that ...
It is hard to follow cos most of our leaders are just barking and no action..
our PM needs to reconcile with his partner
Cheddi Bachelors club - needs to search for partners even in old age to reach this target...
We need some leaders with action not blah blah...
If 76% Population is of Hindus, 24% Muslims!!! which is = 100%, then what about christian, Jain, Sikhs, Buddhists & Atheist?????
Mathematical Error Mr. Giriraj Singh.. You don't know simple maths and you are the Union Minister for the State.!!!! STRANGE....
Dikhao yaar. Mardaangi hai to.
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