Kumaraswamy is supporting BJP from back doors, says CP Yogeshwar

Bengaluru: The Secondary School Leaving Certificate (SSLC) examinations in Karnataka concluded on Friday with an overall average of about 98 per cent attendance amid the coronavirus scare. Chief Minister B S Yediyurappa congratulated the lakhs of students who appeared for the crucial exercise braving the coronavirus pandemic situation.

An average of about 98 per cent of 8.5 lakh odd enrolled students took the exams which began on June 25, after the government stuck to its decision to go ahead with them despite rising coronavirus cases but laid down a string of safety measures, including face masks and maintaining distancing by seating only one student a bench.

Examinations for all main subjects had been completed and alternative subjects such as music would take place on Saturday, Education department officials said.

"I heartily congratulate students who faced the examination even during the coronavirus pandemic," Mr Yediyurappa tweeted.

Expressing happiness over the successful completion of the examination, he greeted state Primary and Secondary Education Minister S Suresh Kumar, officers and employees of education department, health department, police and transport personnel.

"The exam is a proof that anything can be made possible if all the government departments work in tandem," Mr Kumar tweeted.

Later addressing a press conference, he said on Friday 98.10 per cent attendance was recorded compared to 98.76 for the same paper last year.

"Credit goes to children. First day, parents were scared and students were sceptical and there was a big challenge before us. But the children appearing for the exam instilled confidence. They came with masks, sanitisers and were careful about maintaining social distancing. Our children have set an example for others to follow," Mr Kumar said.

Lauding the students, parents and the government staff who made the exam possible ignoring the virus scare, Medical Education Minister Dr K Sudhakar said Karnataka has set an example by successfully conducting the examination.

The Karnataka Secondary Education Examination Board, which conducted the examination, faced various challenges. While protecting students from coronavirus infection was the top priority, transportation, security and convincing the parents to allow their children to take up the exam were the other factors it encountered.

According to sources in the department, the education officers had directed authorities of all the schools to call the parents and students to make sure that they appear for the examinations.

The Central Board of Secondary Education (CBSE) and boards of various neighbouring states either gave general promotion or decided to give marks to the students based on their performance in the earlier tests conducted by the schools.

The exams were conducted at a time when there was a sudden spurt in coronavirus cases in Karnataka, especially Bengaluru. Expressing apprehension, former chief minister and JD(S) leader H D Kumaraswamy had appealed to the government to postpone the examination but the government went ahead with its decision.

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 18: With 12 fresh cases of the COVID-19 infection, including one woman, the total number of novel coronavirus cases in Karnataka surged to 371 on Saturday.

The sources said that as many as three new positive cases were reported from Mysuru district, followed by two each from Kalaburagi, Bhagalkote, one each case from Vijayapura, Belagavi, Dharwad, Gadag and Mandya, districts on Saturday.