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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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Jan 30: A dentist has been arrested by the Dakshina Kannada district police on charge of sexually harassing a woman patient during treatment at a hospital in Beltangady taluk.

The accused has been identified as Dr Sudhakar. He is facing charges under section 354, 354A(1)(I) of IPC.

The incident occurred yesterday when a local woman had been to the government hospital at Kasaba village in Beltangady for dental treatment.

According to the woman, Dr Sudhakar deliberately touched her body inappropriately and sexually harassed during treatment.

The shocked woman went to the jurisdictional Beltangady police station and lodged a complaint. The doctor was arrested and produced before the court.

Bengaluru, Mar 6: The Karnataka Congress on Thursday termed the budget for fiscal 2020-21 presented by the B.S. Yediyurappa government as the "weakest ever state budget".

"This is the weakest budget ever that our state has had. There is no clear cut provision in the budget for industrial growth or to generate jobs. No clarity on department wise allocation," tweeted Congress.

Congress leader Dinesh Gundu Rao said he did not expect such a bad budget which has discriminated on agriculture and education sectors.

"The state budget does not mention major irrigation projects like Kaveri valley and Krishna. No farmers loan waiver," noted Rao.

The opposition party has criticised the ruling Bharatiya Janata Party (BJP) that the potential of Karnataka was not realized to generate revenue through this budget.

Assailing the additional tax on petrol and diesel, Congress said the development will lead to price rise and is a huge disappointment.

"People are reeling under high inflation and reduction in income. BJP has rubbed salt into injury by further increasing prices and providing no relief to common man," said the party.

Bhalki MLA and Karnataka Pradesh Congress Committee working president Eshwar Bhimanna Khandre pointed out that the Centre gave the state only Rs 1,869 crore, despite a loss of Rs 35,160 crore in 2019.

Calling stamp duty reduction for housing within Rs 20 lakhs as an insult to people, Congress questioned the Chief Minister and BJP to first show where in Bengaluru does one get housing within Rs 20 lakh.

"This is mockery of people. No mention or allotment to universal housing programme that Congress government had delivered," claimed Congress.

Focusing on Karnataka capital Bengaluru, Congress slammed the BJP saying no proper revenue policy has been mooted.

"Last mile connectivity issue not addressed. Drinking water issue is not mentioned. No mention of peripheral ring road. No mention of Akrama-Sakrama and no thought process has gone in while planning Bengaluru," tweeted the party.

The party said Yediyurappa has admitted that there is a financial crisis in his budget speech.

"He admits Rs 8,883 crore aid has been cut, around Rs 11,000 crore state share from Centre has been cut. No additional allocation for flood relief. What is stopping him and 25 members of Parliament to question the centre," observed Congress.

Former chief minister Siddaramaiah mocked Yediyurappa that though he calls himself a farmer''s son, he delivered an anti-farmer budget.

"No one will benefit from this budget. A complete failure to boost the economy, to realize inclusive development and to improve standard of living," he tweeted.