People urged to uphold peace, humanity to build a powerful Hindustan'

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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 15: The civic body in Bengaluru has said that gathering at marriage functions should not exceed 100 people in order to curb the spread of coronavirus.

A circular issued by Bruhat Bengaluru Mahanagara Palike (BBMP) dated March 15 said, "All marriage functions pre booked in marriage halls, hotels, Party places, etc. prior to the issue of circular dated March 13, shall be allowed to be conducted subject to the condition that the gathering in the function not exceeding 100 persons."

"The above relaxation is an exception in consideration of the difficulties in rescheduling and cancelling the Marriage event immediately," the circular said.

It said, "The Owners/Management of such locations where Marriages are to be solemnized due to pre booking shall maintain high standards of sanitation and hygiene by periodically cleaning by 10 per cent Sodium Hydrochlorite Solution or any other effective disinfectant the surfaces, floors and exposed areas likely to be touched by the attendants."

"Any person attending the function having any such symptoms like Cough, Cold, and Fever etc. shall be requested for immediately leaving the Programmes," it said.

The civic body further said in the circular, "No fresh bookings of any place for Marriage programme are permitted till further orders. Any bookings on future dates by any organizer, event manager, owner of such property or any other person will be at his own risk and action will be taken against the property or any other person for any kind of bookings before an Order allowing such bookings is issued by a Competent Authority."

"The restrictions imposed are in the absolute interest of Public Health for preventing the Community Spread and outbreak of the disease at mass scale. All other restrictions imposed by order dated March 13 shall stand the same," the Circular added.

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."