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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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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Narrow minded Mr. Shetty, in gulf countries somany Hindu girls are working under Arabs/Muslims for the sake of money. Why don't you term them condition to work under Hindus in India.
need job in muslim firm in ramdhan time many hindu womens weariing burka and coming to collect zakat money are you bother about tiz know because need money what a joke ramesh shetty
For your kind information most of all muslim firm many hindu relgious girls working and aslo many bachelore hindu girls working in gulf country tiz is allowed ,what you called for tiz love jihad or love jihd in gulf country shame on you uncultred people....
Rakesh Shetty : people like you are called narrow minded..... Grow up.
i dont understand why people like Rakesh Shetty are so much worried about popularity of Islam.
if they can track who is visiting whom in the locality, I wonder why these goons didnt reach sister Bhavani's house, who died at Janavasati Colony in Puttur taluk’s Vidyapur , and not a single saviour of hindu religion came forward to cremate her.
i wish these goons help their own hindu Koraga families living in shambles in Kulshekar.
And hope the police exhibit same proactiveness to stop moral.policing, drug menace, rapes and control law and order in the district.
looks like police dept is only interested in supporting moral.policing and protecting cows
Non-sence statement given by One Mr. Rakesh Shetty. Why that one sided policy? There are many cases of "Kesari Jihad" by the Saffronists in the recent days. Open your narrow-mindedness before you give such statement.
ಶ್ರೀಯುತ ಶೆಟ್ಟಿಯವರೆ,
ಇಸ್ಲಾಂ ಸೃಷ್ಟಿಕರ್ತನ ಧರ್ಮ. ಈ ವಿಶ್ವವನ್ನು ಸೃಷ್ಟಿಸಿದ ಏಕೈಕ ಜಗದೊಡೆಯನನ್ನು ಆರಾಧಿಸುವುದು ಮಾತ್ರವಾಗಿದೆ ಇಸ್ಲಾಂ ಕಲ್ಫಿಸುವುದು. ಅದಲ್ಲದೆ ತಾವೇ ಸ್ವತಃ ನಿರ್ಮಿಸಿದವುಗಳನ್ನು ಪೂಜಿಸುವ ಗತಿಗೇಡು ಮುಸ್ಲಿಮರಿಗಿಲ್ಲ. ಯಾರಾದರೂ ಹಾಗೆ ಮಾಡಿದರೆ (ಶಿರ್ಕ್ ಮಾಡಿದರೆ) ಧಾರ್ಮಿಕವಾಗಿ ಅವರು ಮುಸ್ಲಿಮರೂ ಅಲ್ಲ. ಇನ್ನು ಬಲತ್ಕಾರದಿಂದ, ಹಣದಾಸೆಯಿಂದ ಯಾರನ್ನಾದರೂ ಹಿಡಿದು ಧರ್ಮವನ್ನು ಅವರ ಮೇಲೆ ಹೇರುವ ಗತಿಗೇಡು ಮುಸ್ಲಿಮರು ಮಾಡಿಲ್ಲ, ಮಾಡುವುದೂ ಇಲ್ಲ. ಈ ಧರ್ಮದ ಸುಂದರ ಆಶಯವನ್ನು ಕಂಡು ಆಕರ್ಷಿತರಾಗಿ ಜನರು ಇಸ್ಲಾಮನ್ನು ಸ್ವೀಕರಿಸುತ್ತಾರೆಯೇ ಹೊರತು, ಮುಸ್ಲಿಮರನ್ನು ಕಂಡಲ್ಲ. ಅಲ್ಲಾಹನು ತಾನು ಉದ್ದೇಶಿಸುವವರನ್ನು ಸನ್ಮಾರ್ಗದಲ್ಲಿ ನಡೆಸುತ್ತಾನೆ. ಆದ್ದರಿಂದ ನೀವು ದಯವಿಟ್ಟು ಖುರ್ ಆನನ್ನು ಕಲಿಯಿರಿ.
ಇಸ್ಲಾಂ ಇಹಲೋಕ ಜೀವನ ಮತ್ತು ಮುಸ್ಲಿಮರ ಜನಸಂಖ್ಯೆಗೆ ಯಾವುದೇ ಪ್ರಾಶಸ್ತ್ಯ ನೀಡುವುದಿಲ್ಲ. ಬದಲಾಗಿ ಪಾರತ್ರಿಕ ಜೀವನದ ವಿಜಯವೇ ಅದರ ಉದ್ದೇಶ. ಅಲ್ಲಿ ವಿಜಯಶಾಲಿಯಾಗಬೇಕಾದರೆ ನಮ್ಮೆಲ್ಲರನ್ನು ಸೃಷ್ಟಿಸಿದ ಆ ಅಲ್ಲಾಹನ್ನು ಮಾತ್ರ ಆರಾಧಿಸಬೇಕು. ಇದರಲ್ಲಿ ವ್ಯರ್ಥವಾಗಿ ತರ್ಕಿಸಿ ಯಾವುದೇ ಫಲವಿಲ್ಲ.
This is a case of Love jihad, Great Job by Bajrang Dal. we dont have any problem if muslims girls visit our houses. but we condemn hindu Girls visiting Muslim houses. Muslims will do Taqiya to convert hindus by hook or crook,
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