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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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
This is a advance education era. Most of the grown up childrens are well capabe to understand what is good what us bad. What is God's Creation and what is not. In our Inpendence country every one have right to choose their choice.
Orthere no need to interfere or they have right to do any forcefull act fo
Convert the rest or to do forcefull Ghar Wapsi.
Trust street mongers will stop these non sense activity.
Some one faught with his father n left home. Some mentally group's trying to create communal tension in South Kanara surroundings.
State Govt n dept must take strict action n send them behind bar for at least 6 months period is the only right remedy.
Jai Hind
bjp has no other issue and that is the reason they take up converion issue. Its cleared by Police Dept that no case of forced conversion taken place in Suliya. Based on this, Police should ban hate mongers from giving any speech and ban these terrorist organisations.
More & More people converted to Islam in USA & Britain so that they can create another Afaghanistan & Syria
Bopanna...
I feel you need more education on God... U look dumb when u dont study about your enemies.. Dont just depend on cheddis fed info on islam...
Use your own intellect and read your enemies book The QURAn...
I will help U ... read online theQuranProject , well explained for people like you... Try it man.
Another pillar of Islam
1. Bombs
@Sangeeth, Mangalore
Yes! they converted because of listening to zakir naik's speeches. Because he speak the truth. and they liked the truth.
Entire Karnataka incluidng Dakshina Kannada is crying for drinking water. But these shakunis are worried about religious conversions.
I want to ask the bunch of jokers in this forum - Viren, Yogesh & Sangeeth
Your voice speaks that you are really worried of growing popularity of Islam
Why do you think people are forcibly converted? Are they illiterates ?
You will agree to the fact that in this modern age, each product has its own USP and just imagine why there are more Airtel subscribers in the country compared to other telecom providers ?
Are the customers compelled to subscribe for their product ? In this age, every individual are smart enough to decide which one suites him.
So it is foolish to tell people are being converted forcibly
Yogesh...how innocent Hindus became chaddis...this is mind wash from terrorist group RSS
@Yogesh
UK's No 1 News channel
http://www.dailymail.co.uk/news/article-1343954/100-000-Islam-converts-…
@Yogesh proof for yogesh
http://www.dailymail.co.uk/news/article-1343954/100-000-Islam-converts-…
http://www.ibtimes.com/muslims-america-more-latinos-converting-islam-us…
CELEBRITIES WHO CONVERTED TO ISLAM, SO MANY
https://en.wikipedia.org/wiki/List_of_converts_to_Islam
And whoever seeks a religion other than Islam, it will never be accepted of him) ?3:85?.
In this Ayah ?3:19?, Allah said, asserting that the only religion accepted with Him is Islam,
No other religion book says. We dont benifit by converting u people, u are getting benifitted.
At the end of the day, those who doesnt follow and practice islam. He will be the loser.
More educated person is converting to islam than non educated ones.
Highest people are converting islam is from britain and america. There is no pint of force converting.
After 9/11 to prove quran wrong. many started to studing quran, they found that it is the true peace religion. And the terrorists are doing anti islamic. Against islam. So many people converted stil now people are converting.
Many big celebrities like mohammed ali, tyson, tony blairs sister are all converted to islam
please note that hindus converting to islam because of some hate speeches made by hindu leaders like kalladka
@VIren
U should Thank Arabs, the word Hindu is given by Arabs.
The actual Religion is named as Sanathan Dharm. Which nobody Follows.
@viren
How Hindu Population is Increasing, Show me a single Person who converted from Islam to Hindu.
i think u r just telling Opposite,
Plz Check, Ur family Members might have converted to Islam.
Police should arrest all PFI goons , hindu population is increasing day by day and PFI aware about it
Just say in ur heart, La ilaaha illalla Muhammed arra Soorula, u Have passed first stage of islam. No body can stop it.
This is the power of islam.
The Five Pillars consist of:
Shahadah: sincerely reciting the Muslim profession of faith.
Salat: performing ritual prayers in the proper way five times each day.
Zakat: paying an alms (or charity) tax to benefit the poor and the needy.
Sawm: fasting during the month of Ramadan.
Hajj: pilgrimage to Makkah.
No other religion book says so.
Hindus make idols, But i think, the man who makes the idol. is greater than idol.
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