Manipal: Over 5,500 participate in hand-washing event for world record

Bengaluru, Apr 18: The Indian Council of Medical Research has approved 16 laboratories, comprising 11 government and five private laboratories in Karnataka, for testing the samples of COVID-19 suspected cases, the state government said on Saturday.

Meetings and negotiations were held with some private laboratories for conducting COVID-19 sample testing, additional chief secretary (health and family welfare) Jawaid Akhtar said in a circular.

"Based on the negotiations, the cost per test has been fixed at Rs 2,250," the circular read.

These private labs have to abide by the conditions laid down by the state and union governments, it added.

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Feb 24: Raising questions about the situation in Kashmir, senior Congress leader and former Karnataka chief minister Sidddaramaiah on Monday asked the BJP heading the union government to prove 'normalcy' by hosting US President Donald Trump's event in the valley.

If @BJP4India feels Kashmir has returned to Normalcy, & If @BJP4India feels that there is no govt orchestrated violence. Now is the time to prove the same by hosting @realDonaldTrump's event at Kashmir, Siddaramaiah tweeted.

Amid concerns raised by opposition parties, the government has said efforts have been made to restore normalcy in Jammu and Kashmir which faced months of restrictions after its special status under Article 370 was scrapped in August last year.

Siddaramaiah, who is Leader of Opposition in Karnataka Assembly, in another tweet hit out at Prime Minister Narendra Modi on the long wall built near the airport in Ahmedabad allegedly to block the view of a slum, ahead of Trump's visit.

It is time for @realDonaldTrump to get inspired from @narendramodi. Inspiration to build decorative walls to hide not so decorative life!! he tweeted. The opposition Congress in Gujarat had accused the BJP- ruled civic body in Ahmedabad of building the 500-meter long wall to block the view of a slum colony. Refuting the allegations, AMC officials had said the construction of the wall, around four feet in height, was approved much before Trump's Gujarat visit was finalised.

Trump, accompanied by First Lady Melania Trump and a high-level delegation, arrived in Ahmedabad around noon on Monday for a little less than a 36-hour-long trip.