RSS demands judicial probe into killings of workers in Kerala

Bengaluru, Jul 2: As many as 3,363 students from Covid-19 containment zones have appeared for SSLC examinations in different parts of Karnataka till yesterday. On the first day of exam, i.e., on June 25, only 998 students these zones had written the exam.

In the past few days the number of containment zones has increased across the state in general and Bengaluru in particular. In all, 32 students could not appear for the exam as they turned positive.

While on June 25, the number of students who were found unwell during the check up at exam centre was 201, it was 613 on Wednesday. Students who are sick and those from the containment zones take the exam in a different room.

The social science exam on Wednesday saw an attendance percentage of 97.96 (7.68 lakh). This was against 98.78% last year. There were 7.45 lakh fresh candidates, 20,000 private candidates and 593 from outside the state.

Five students in Yadgir district were given question papers based on the old syllabus for maths exam on June 27. Their answerscripts will be evaluated separately and action will be taken against the officials.

Malpractices assisted by schools by switching off CCTV cameras were reported in Ballari and Koppal. “We’ve completed all the core subjects. Now only languages are left. We’ll complete them too in a safe environment,” said S Suresh Kumar, primary and secondary education minister.

Bewngaluru, Jun 23: Karnataka Chief Minister B S Yediyurappa on Tuesday said Covid-19 related fatalities in the state was far less compared to other major states, as he called on people and front line corona warriors infected by the virus not to lose courage.

The Chief Minister made the statement following the alleged suicide of a constable attached with the Karnataka State Reserve Police after he tested positive for Covid-19. "The total number of COVID related deaths in the state is very less compared to other major states.

There is no reason for any infected citizen or government employees to lose courage. The government is always with you," a tweet on the Chief Minister's official twitter handle said.

Of the total of 14,011 deaths reported so far, Maharashtra accounted for the highest with 6,283 fatalities, followed by Delhi with 2,233, Gujarat with 1,684 and Tamil Nadu with 794.

Acknowledging that police form the frontline of corona warriors and were working putting their lives at stake, he said a special Covid-19 testing center is being set up for them and all measures will be taken to provide the best treatment for those infected.

As of June 22 evening, cumulatively 9,399 Covid-19 positive cases have been confirmed in the state, which includes 142 deaths and 5,730 discharges.

The constable, aged about 50 years, was attached with the Karnataka State Reserve Police and was said to be depressed after getting tested positive for Covid-19, sources said.

Expressing condolence over his death, another tweet on the Chief Minister's handle said he has directed officials to to provide all necessary compensation and facilities to the family of the deceased at the earliest. Bengaluru has in the last few days has seen a spike in the number of police personnel getting infected by the virus. At least 74 of them have tested positive in the city and are undergoing treatment, while three have died so far, official sources said.

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