11-year-old boy single-handedly fights mighty python, rescues himself

Mangaluru, Apr 4: No positive case of coronavirus has been detected in Dakshina Kannada district as per the latest update released by the district administration on Friday.

Test results of throat swab samples of 16 people with suspected symptoms were received today and all of them were negative.

A total of 38,518 people have been screened for coronavirus in Dakshina Kannada district till date with 72 people being screened today.

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Jul 19: Karnataka Chief Minister B S Yediyurappa convened a meeting with Private Medical College Hospitals on Saturday to assess COVID-19 management and directed them to provide 50 per cent of the beds, as promised, with effect from Sunday.

The chief minister said that private medical college hospitals need to cooperate as there is a sharp rise in COVID-10 cases in the city. He further said that it has come to the notice of the government that some institutes are denying treatment of COVID-19 as well as non-COVID patients.

The chief minister expressed his concerns over media reports stating several people died as they didn't get timely treatment due to denial from the hospitals. He said that Bengaluru should continue to lead the country as a role model in COVID-19 management.

During previous meetings, private medical colleges had agreed upon providing around 4,500 beds, which would make the total beds available in government and private medical colleges 6,500.

The chief minister expressed dismay over some colleges not providing the number of beds as promised and also about certain lacunae which were noticed by ministers during their visit.
During this emergency situation, we should show humanity. COVID and non-COVID patients shall not be denied treatment and the balance in healthcare system shall be maintained, he advised.

He assured them of all support, including providing doctors and nurses if need be.
The private medical colleges had assured to provide 50 per cent of beds and some colleges offered 80 per cent of the beds for COVID treatment.

Nodal officers have already been appointed to monitor the availability of beds in these medical colleges.

It was decided to issue a notice to Vaidehi Medical College for their absence in the meeting.