No idea whether Ambareesh accepted ticket or not, no plans to meet him: CM

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, May 27: Amid uncertainty caused by the Covid-19 pandemic, which has disrupted school education in Karnataka, the state government is seeking the help of the Union Ministry of Information and Broadcasting to televise classes, a state minister said on Tuesday.

"We request you to provide minimum three channels on the Doordarshan network exclusively for the Department of Public Instruction, Government of Karnataka," Primary and Secondary Education Minister Suresh Kumar said in a letter to Union I&B Minister Prakash Javadekar.

Suggesting co-branding the channels under DD and the state education department, he asked for the channels to be mandatorily transmitted by the cable and DTH operators under the Cable Act.

The state education department has already discussed with Prasar Bharti officials, who, according Kumar, have assured 3+3 hours of timeslots on the education channel Chandana on cost basis.

"We have also made all the necessary arrangements for content creation by the teachers," he said.

Meanwhile, the minister has revealed that television is the best medium for the students as a home learning mode in these challenging times.

"The department of public instruction reviewed various technological options and considered TV as one of the best means for home learning," Kumar said.

In a survey conducted by the education department, it was found out that 95 per cent households had television sets.

Kumar said the state operates government schools in nine languages, including Kannada, English and Urdu.

"To cater to all the students, and considering a long-term strategy to run schools by maintaining social distancing, we are in immediate need of minimum three exclusive channels to teach through TV," he said.

According to Kumar, the Karnataka government is facing hardships to meet the capital expenditure requirements, hence, it is seeking help from the I&B Ministry.

Bengaluru, Jan 14: The Karnataka High Court on Tuesday issued a notice to the government of Karnataka while hearing the plea for ordering Judicial probe into the December 19, violence and police action in Mangaluru.

On December 19, the local police while taking action against anti-CAA and NRC protesters had fired at them which had killed two citizens. The police action was then followed by curfew in the region for over 48 hours.

The High Court bench hearing the plea of JD(s) leader Iqbal and Sullia Pattan Panchayat member Iqbal seeking its intervention to order judicial probe into the matter has issued the notice to the government.