Modi govt seeks report from Karnataka, other states to extend ban on SIMI

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Apr 28: A local court in Karnataka on Tuesday granted bail to a CRPF commando who was arrested by state police officials for alleged assault on them during COVID-19 lockdown duty, a charge contested strongly by the paramilitary.

The jawan has been taken to the jungle warfare training school of the paramilitary force in Belagavi district, a senior official said.

Constable Sachin Savant of the 207th CoBRA battalion was granted regular bail by a court located in Chikodi taluka of the district, he said.

A team of CRPF and CoBRA officials were present in the court during the proceeding during which the state police did not oppose the bail, the official said.

The commando was arrested by police on April 23 from Examba village (Belagavi district) when he was washing his bike outside his house without wearing a mask, as required under the coronavirus prevention protocol.

An altercation and physical fight took place between the two sides, following which the trooper was taken to the local police station and arrested.

The Central Reserve Police Force (CRPF) had on Monday taken up the case with the Karnataka director general of police (DGP), calling the incident "unpleasant".

The CRPF letter said commando Savant was "manhandled, ill-treated, paraded to the police station barefooted, kept in chains and handcuffs" by police personnel and sought the intervention of state Director General of Police Praveen Sood.

The paramilitary had said that from the scrutiny of a viral video on social media of the incident "it is apparent that the conduct of the police personnel was not citizen-centric".

A police report had said the CoBRA commando "started the altercation" with the beat constable and another policeman accompanying him, and "assaulted" them.

As per the official Twitter handle of the Karnataka DGP's on Monday evening, "IGP (inspector-general of police) Belagavi has been asked to enquire into the incident involving the CRPF constable and action will be taken against guilty after receipt of the report".

The Commando Battalion for Resolute Action (CoBRA) unit of the CRPF specialises in guerrilla tactics and jungle warfare.

Bengaluru, Jul 17: The Doctors at Fortis Hospital, here on Friday, successfully treated a 97-year-old patient who suffered an embolic stroke due to calcified stenosis (narrowing of an artery resulting in restriction of blood flow).

In a release, the Hospital authorities stated that the team of doctors led by Dr Rajpal Singh, Director and Interventional Cardiologist, Fortis Hospital, Bangalore successfully conducted Carotid Artery Stenting (CAS) to increase the blood flow in the blocked areas which had resulted in stroke following stringent safety protocols and ensuring proper segregation of COVID and Non-COVID patients at the hospital.

Carotid arteries serve as the main channels which supply the blood flow to the brain and facial structures. Any significant narrowing in these arteries can cause a brain stroke, a mini-stroke, headache, and neurological symptoms.