Two brothers killed as speeding bus rams into auto-rickshaw in Karkala

Bengaluru, Mar 26: In a second coronavirus related death in Karnataka, COVID-19 test results of a 75- year-old woman who had died on Wednesday has come out as positive, Medical Education Minister K Sudhakar said.

"I regret to inform that the COVID-19 test result has come out as positive for patient, who had succumbed to death yesterday. The govt stands committed to curb the spread of Corona Virus in the state. Please stay home, stay safe," Sudhakar tweeted on Thursday.

Health and Family Welfare Minister B Sriramulu too said the lab reports regarding the death on Wednesday have come and it has come out as positive, and death was due to COVID-19.

The exact cause of her death would be known only after the final report comes, both Minister had said on Wednesday.

The woman from Gauribidanur in Chikkaballapura district, had returned from Mecca in Saudi Arabia recently.

Sharing details about the woman, Sriramulu in a tweet on Wednesday had said, she died at Bowring hospital here at 1 am, and was suffering from diabetes, chest pain and hip fracture.

The patient was undergoing treatment in isolation ward at a hospital in Gauribidanur, later for more treatment she was shifted to Rajiv Gandhi Institute of Chest Diseases in Bengaluru, from where she was shifted to Bowring hospital on Tuesday," he had said.

This is the second coronavirus fatality in the state.

Earlier this month, a 76-year old Kalaburagi man died "due to co-morbidity and was also tested positive for COVID- 19", becoming the country's first coronavirus death.

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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 1: As many as 12 of the 40 identified people from Karnataka, who attended Tablighi congregation in Nizamuddin, Delhi, have tested negative for COVID-19, state Health Minister B Sriramulu said in a tweet on Wednesday.

It is also learnt that 62 foreigners from Indonesia and Malaysia, who attended the congregation, have visited the State and 12 of them have been quarantined, the tweet said.

''The health department, in association with the Home department, has jointly started the process of identifying all the 300 who attended the event,'' he said.