RSS, BJP?workers block Commercial Street in protest against Rudresh murder

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Bengaluru, Apr 1: As many as 12 of the 40 identified people from Karnataka, who attended Tablighi congregation in Nizamuddin, Delhi, have tested negative for COVID-19, state Health Minister B Sriramulu said in a tweet on Wednesday.

It is also learnt that 62 foreigners from Indonesia and Malaysia, who attended the congregation, have visited the State and 12 of them have been quarantined, the tweet said.

''The health department, in association with the Home department, has jointly started the process of identifying all the 300 who attended the event,'' he said.

New Delhi, Feb 28: They could hear shots being fired, sense smell of property and vehicles being burnt and feel the stones being pelted. Despite the mayhem that unfolded just a few steps away from their doorsteps, many Muslim households did not feel unsafe due to their Hindu neighbours during the violence in Delhi earlier this week.

Tarannum, a resident of Chand Bagh, said she cannot thank her neighbour Nem Singh enough for saving 15 members of her family that fateful night of February 25. Singh, an auto-rickshaw driver, lives right across her house.

"I could hear the thumping on the door. Our neighbour came to rescue us and assured us that no harm would come to our family, " said Tarannum who lives in lane number 7.

"We thought khayamat has come. Our kids too got scared. Those indulging in rioting are just terrorists. Hindu brothers gave us shelter and saved us. How should I say that they are Hindus or Muslims? When we were under attack, these Hindu brothers provided us safety. We should not fight, " said Tarannum while recounting the horror.

She said a mob has no face, no religion. "I want to tell everyone mob has no name, no religion. Kaun sa pathar kisne mara kisko laga pata hai kya? Pathar ne mazhab dekha kya? (Which stone was thrown by whom, who was hit, does anyone know. Stone does not have a religion," she said.

Singh said he could not bear the wailings of his neighbour's kids.

"Dar to tha par apni gali mein kisi ko pareshan nahi hone dena tha. (I too was afraid but I could not have let them hurt my neighbours)," said Singh when asked if he could have also been attacked for giving shelter to Tarannum family.

"I told them that the rioters will have to go through us first. We all were equally scared," recalled Singh.

Jameel, another local resident, said that his Hindu neighbours were even ready to sacrifice their lives to save him from the ruthless terrorists hired by pro-CAA politicians to unleash violence against Muslims.