Transferred DySP Anupama Shenoy reinstated after outcry

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Newsroom, June 5: The union health ministry has announced new rules for shopping malls which have been permitted to open from June 8, except those falling in containment zones.

The guidelines will come into effect from Monday and cinema halls, gaming arcades and children play areas in these establishments will remain closed.

Here is the complete list of standard operating procedures issued by the ministry to be followed in shopping malls to contain the spread of COVID-19.

•   Thermal screening of all visitors mandatory at entry point, along with compulsory hand hygiene. Only asymptomatic visitors will be allowed to enter the shopping mall .

•  It will be mandatory for all visitors as well as workers to wear face masks at all times inside the mall. 

•  Posters and audio-visual media on preventive measures about COVID-19 should be displayed prominently.

•  Visitor entry to shopping malls should be allowed in a staggered manner and adequate manpower be deployed by mall management for ensuring social distancing norms.

•  All employees who are at higher risk like elderly, pregnant women and those having underlying medical conditions should take extra precautions. They should preferably not be exposed to any front-line work requiring direct contact with the public.

•   Proper crowd management in the parking lots and outside the premises – duly following social distancing norms shall be ensured. Preferably, separate entry and exits for visitors, workers and goods/supplies shall be organised.

•   The staff for home deliveries should be screened thermally by the shopping mall authorities prior to allowing home deliveries and required precautions while handling supplies, inventories and goods in the shopping mall must be ensured.

•   Physical distancing of a minimum of 6 feet, when queuing up for entry and inside the shopping mall should be maintained as far as feasible while the number of customers inside the shop should be kept at a minimum, so as to maintain the physical distancing norms.

•   The number of people in the elevators should be restricted and use of escalators with one person on alternate steps should be encouraged.

•   Number of people in the elevators shall be restricted, duly maintaining social distancing norms. Use of escalators with one person on alternate steps may be encouraged.

•   Effective and frequent sanitation within the premises shall be maintained with particular focus on lavatories, drinking and hand washing stations/areas

•   Cleaning and regular disinfection of frequently touched surfaces  to be made mandatory in all malls in common areas as well as inside shops, elevators, escalators etc.

•   In the food-courts, adequate crowd and queue management is to be ensured and not more than 50 per cent of seating capacity should be permitted.

•   Food court staff should wear mask and hand gloves and take other required precautionary measures, the seating arrangement should ensure adequate social distancing between patrons as far as feasible and tables should be sanitized each time a customer leaves.

•   Gaming arcades, children play areas and cinema halls inside shopping malls shall remain closed.

•   Spitting should be strictly prohibited and installation and use of Aarogya Setu App shall be advised to all.

•   The ministry advised persons aged above 65, those having comorbidities, pregnant women and children below the age of 10  to stay at home, except for essential and health purposes.

Bengaluru, Jul 8: 15 police personnel from Bangalore's Whitefield division tested positive for COVID-19 on Wednesday.

Out of these, 12 are from the Hindustan Aeronautics Limited (HAL) police station, sources said.

A total of 27 police staff of the Whitefield division have tested positive so far and five have been discharged. The HAL police station closed on June 27 after one police staff tested COVID positive. All personnel of the police station were tested in the following days and 12 tests returned positive.