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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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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Rasheed Bhai......... No individual is above the Nation. Personal attitudes will not damage the whole NATION and its CONSTITUTION. But a Political Party as a whole can make a difference to the NATION. Being a citizen of INDIA, just evaluate the Nation under BJP rule and CONGRESS rule you will get your ANSWER. Thank God.... your family is safe and secure, but think about those families who were the victims of BJP workers. The intolerance in last 4 years has gone from bad to worse. For God's sake, please keep your difference away especially for this State election and for upcoming General Election in Year 2019. All the best to all the Kannadigas and lets give another chance to CONGRESS to keep the injurious political party BJP much far away.
i think muslims should vote for Ashraf . attitudes of U.T is dangerous than bjp , he is selfish , his last five years attitudes shows he may sell entire community for his personel gains... such candidates should be defeated ....
improve ullal means..... he had not done anytihng to his own place then how we can trust him that he will develop karnataka/India........ i am not anti congress dear. but those who did not work for the welfare of the society should not win this election.... anyone maybe...... staying as loyal, honest, visiting funeral is not that he is good MLA or Minister.......
Abbu , what is your thinking brother, to improve ullal, you will vote against congress, really sad with your thinking , thing about India and people of Bharat , if you divide vote against the situation will be same , vote congress to get good results
use common sense please dont vote any muslims indipendent candidate, vote only congress
Some selfish and jealous people are trying to misguide the community. Instead of supporting and guiding the community to the unity, they try to divide just because of their selfish motives. Community should be very vigilant and aware of what is happening. While all secular forces trying hard to stop this Communal party, this kind of selfish people are trying to divide. They harm the community indirectly. Its better not to give an opportunity to our enemy rather than harming our own community. So be aware of this kind of selfish people. Its very easy for all political parties to be communal but secular parties are struggling. Instead of supporting secular parties, these selfish people trying to divide the votes. Very bad. Need to reject him outright.
Under the current state of affairs, we need to think about the whole KARNATAKA STATE and our great nation "INDIA". This JD(S) candidate is BJP's agent and they are not bother about our STATE & NATION. Even though if he win election this time, I can challenge he will never improve ULLAL. He will just fill his pocket and share few penny to BJP. Let all the Kannadigas be SMART and vote for CONGRESS - because the current situation in INDIA had forced all the MUSLIMS to vote only CONGRESS. We all should think that its CONGRESS V/S BJP only. No other parties should exists at this moment of time. Lets build a very strong and smart INDIA.
better vote all muslims for ashraf ... then how there will be vote divide..... UT khadar has not done anything to improve his place ullal
Good news for BJP
If you vote for Ashraf it is like voting for BJP. Do you want Modi and Amit Shah to win?
Be smart and don't vote for Ashraf
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