Karnataka unsafe in Congress hands, says Smriti Irani

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, May 1: Dakshina Kannada on Friday two more positive cases of coronavirus in the district, taking the total number of cases to 24.

According to the state health bulletin, the 62-year old husband of the 58-year old woman of Boloor who tested positive for COVID-19 on Thursday, also tested positive for the virus.

Another 69-year old patient hailing from Kasaba in Bantwal Taluk also tested positive for the infection.

Bengaluru, Jul 9: The State Education Minister of Karnataka clarifies that 2nd PUC result 2020 to be declared around July 20. The Minister’s tweet signals that Karnataka Second Pre- University examinations result is not releasing today, and likely to be declared around July 20, 2020.

Taking on his tweeter account Karnataka Education Minister S Suresh Kumar on Thursday informed that the 2nd PUC results (Class 12th) would not be declared on Thursday, that is on July 9 and would be available around 20th July. Earlier students presuming the result on Thursday had been started asking Education Minister whether Karnataka 2nd PUC Results would be announced today or not.

Addressing the students quarries, on Thursday Education Minister S Suresh Kumar took to his tweeter account and tweeted, “2nd PUC results are not announcing today, the results would be released around July 20, 2020”, or the second last week of July. Education Minister took to his twitter account to console the students, he tweeted “Many students are calling me to know whether Second PUC results will be announced Today. I once again inform all that Second PUC results will come out around 20th July.

Many students are calling me to know whether Second PUC results will be announced Today.

I once again inform all that Second PUC results will come out around 20th July.

— S.Suresh Kumar, Minister - Govt of Karnataka (@nimmasuresh) July 9, 2020

Earlier, the education minister informed that Karnataka Secondary School Leaving Certificate Exam, SSLC Results 2020 would release most likely by August first week and Second Pre-University (2nd PUC) Results 2020 would be declared by last week of July.

Karnataka earlier decided to hold the Board exams in spite of the opposition faced due to health risks over Corona Virus. The remaining SSLC & 2nd PUC examinations in Karnataka took place with the strict precautionary measures. The Education Minister himself carried out the inspection of many exam centres during the exams, a report said.

Evaluating the answer copies of exams, now results are to be declared in the month of July and August 2020. To get the result updates students are advised to keep visiting the official website of Department of Pre-University Education, Karnataka.