Martyred NSG commando Niranjan Kumar's body reaches Bengaluru

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Udupi, Apr 29: Personal Protection Equipment (PPE) kit used by the doctors to treat COVID-19 patients was found in the river at Kodangala, Alevoor Gram Panchayat limits, sources said on Wednesday.

According to them, a Panchayat office staff who noticed the PPE thrown in the river informed the Health Department about it on Tuesday and following which a police complaint was filed.

As the PPE is used only for medical treatment, police officials need to investigate who used the kit and in which hospital, who threw it in the river and the purpose of throwing it.

Bengaluru, May 3: Erection of barricades and drawing up of boxes or circles aimed at maintaining social distancing were seen in front of liquor shops in different parts of Karnataka on Sunday, a day ahead of their reopening after a gap of over 40-days, due to the lockdown.

Karnataka Excise Commissioner on Saturday had ordered that only CL-2 (retail shops) and CL-11C (state-run retail shops like Mysore Sales International Limited) would open from May 4.

It had permitted liquor sale liquor between 9 am and 7 pm only in areas that are outside COVID-19 containment zones.

Reports of barricades being erected to ensure that people stand in line and drawing of boxes or circles in front of shops to maintain social distancing in front of retail and MSIL shops have emerged from across the state, including the state capital.

Also reports about shop keepers doing special poojas outside liquor shops in Kolar and some even illuminating their outlets with lights from outside have surfaced from other parts of the state.

Meanwhile, officials were engaged in checking stocks ahead of the shops opening on Monday morning.

"We are making all preparations to ensure that government rules are followed. We also seek the cooperation of the people and police," the manager of a shop said.

Another said there may be a rush initially, after which things may get back to normal.

"We expect things to go on smoothly," he added.

Calling for number of customers to be limited to five at a time while ensuring that they maintain social distancing of not less than six feet distance, the order states that customers and the staff will have to wear masks and sanitizers should be used at the shops.

Only stand alone CL-2 and CL-11C shops are allowed to commence liquor sale and not those at malls and super markets, it said.

Officials in Bengaluru said liquor sale is prohibited in 26 containment zones in the city, while in other places rules that have been prescribed need to be followed.

In case of any violation, strict action would be taken, including imposing of penalty, they said.

There was pressure on the government to kick start economic activities, including allowing sale of liquor, to boost the state's finances as excise is the key area which generates revenue.

State Excise Minister H Nagesh had recently pegged the losses at Rs 60 crore per day because of closure of liquor shops, due to the lockdown.