Panel to decide on religion tag for Lingayat

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Mangaluru, Feb 21: Police officials including the Mangaluru city Commissioner of Police P S Harsha would be summoned to appear before the panel conducting a magisterial probe into December 19, 2019 firing on anti-CAA protesters in the city which left two people dead.

Notices would be served on 176 police officers and staff to appear for hearing, Udupi deputy commissioner G Jagadeesha, conducting the magisterial probe into the incident said here on Thursday.

He told reporters that officials, including the city police commissioner Harsha, would be summoned to depose on the violence which led to police firing that killed two people.

Mangaluru (North) Assistant Commissioner K U Belliappa, who is the nodal officer for the police department, has given a list of 176 policemen who are ready to adduce evidence in the hearing.

The police officers would be summoned in phases.

The next hearing is on February 25.

He said so far, 203 members of the public have deposed before him on the incident.

Former city Mayor K Ashraf, who is under treatment in hospital, has also provided a written statement.

The remaining members of the public can provide evidence during next hearings, he said.

On December 19, two people were killed in police firing as protests against the Citizenship Amendment Act (CAA) turned violent here.

The protesters had attempted to besiege the Mangaluru north police station and tried to attack police personnel, following which force was used to disperse them, police had said.

Two people received bullet injuries in the firing and they later succumbed at a hospital, the police had said.

Mangaluru, Jan 25: Hotelier Samtappa reportedly committed suicide by consuming poison in Kadaba taluk in the district on police said on Saturday.

The deceased was running a hotel named Hotel Samtappa here.