HDK’s actor son Nikhil likely to contest LS polls from Mandya, Revanna’s son Prajwal from Hassan

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Mar 24: Underlining the seriousness of the coronavirus, which is spreading like wildfire in Karnataka, renowned Heart Surgeon and founder of Narayana Hrudayalaya Dr Devi Shetty on Tuesday predicted that Karnataka alone will have more than 80,000 people affected with the dreaded killer disease COVID-19 if people fail to protect themselves.

He urged the people to cooperate with the Government in preventing its further spread and immediately treat those who are affected.

Dr Shetty, urging the people to remain indoors and not to venture out, said those who are affected should not come out and remain in isolation even in their houses and take all precautions advised by doctors.

He said if 80,000 people in the state were affected, more than 20,000 need to be admitted to Hospital for treatment.

"More than 2000 affected need to be kept under ventilation and it requires more infrastructure in the hospitals," he said.

Bengaluru, Apr 7:  A group of Muslim philanthropists including a woman were allegedly assaulted by a group of people while they were distributing necessary food items to the needy at Dasarahalli of Amruthahalli Police Station limits in the city.

An FIR has also been registered in this regard and two people have been taken under police custody.

Twenty-three-year-old Syed Tabrez, son of Zarin Taj, secretary of Swaraj Abhiyan's local unit and his mother and friends were attacked by some unknown miscreants at Dasarahalli of Amruthahalli police station limits on Monday while they were distributing essential items to the needy amid the COVID-19 lockdown.

"The incident occurred on Monday. An FIR was filed by the woman stating that she was assaulted by some people. On receiving the information, our officers rushed to Ambedkar Hospital and spoke to one of the victims. As per the complaint, Vidyaranya Pura and Amruthahalli Police have secured two people.

The investigation is underway. It is not a case of communal hatred," said Dr Bheemashakar Guled, Deputy Commissioner of Police (DCP), North-East Bengaluru.

Tabrez has suffered minor injuries on his right hand and right leg while others have also suffered minor injuries. They have been discharged from the hospital.

The incident occurred at around 6 pm yesterday when some people came on a motorcycle, carrying bats and started thrashing Tabrez along with others, as per the FIR. Later, the injured people went to Amrutahalli Police Station and filed a complaint there.

Later they went to the Bowring Hospital which was closed. Then, they went to Dr Ambedkar Hospital in KG Halli.

Syed's mother said the accused persons threatened us, saying that "Muslims are poisoning the rations. You people will not deliver the food here. Muslims will have to leave the slum and relocate themselves somewhere else."