No religious angle linked to lynchings: Venkaiah Naidu

Bengaluru, Mar 9: The first case of Nov Corona patient was found in Karnataka with a 40 year-old Software Engineer, who returned from US, developing fever today at Rajiv Gandhi Hospital in the City. This is the first case reported in the State.

Disclosing this to newsmen, Karnataka Minister for Medical Education Dr K Sudhakar said that the techie, his wife and their one child arrived from US on Feb 28 and were under observation.

He said that there were no indication or any symptoms immediately after their arrival and also for the first four days, but on March 5 the Techie developed fever and today (Monday) it was confirmed that he is suffering from the killer disease.

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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 30: Chief Minister B S Yediyurappa on Sunday convened an all-party meeting and apprised the Opposition leaders about the measures taken by the government to contain the coronavirus in the state.

"I have been regularly holding meeting since March 13 regarding the measures taken to contain the transmission of COVID-19," the chief minister said at the meeting at the Vidhana Soudha.

Health Minister B Sriramulu, Medical Education Minister Dr K Sudhakar, IT-BT Minister C N Aswath Narayan, Deputy Chief Minister Laxman Savadi, former chief minister and Leader of the Opposition Siddaramaiah, Opposition MLAs H D Revanna, D K Shivakumar and former speaker K R Ramesh Kumar attended the meeting.

The chief minister said a task force comprising ministers and officials has been formed to oversee the implementation of the government orders.

Yediyurappa highlighted the prevailing situation across the globe saying that normal life had been paralysed everywhere.

The chief minister also apprised them about the number of clinics all over the state, availability of medicines and protection gear for the doctors and quarantine rooms in the state.