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Shivamogga, Jun 16: The Deputy Commissioner on Tuesday announced a ban on movement of heavy goods vehicles in the Agumbe ghat section between June 15 and October 15 as a precautionary measure, as there was possibility of landslides due to heavy rain during the monsoon season.

All trucks over 12 tonnes will be prohibited from passing through the ghat, DC K B Shivakumar said in a statement here.

The authorities have suggested two alternative routes for the movement of heavy freight vehicles – the Shimoga-Thirthahalli-Sringeri-Kerekatte-Karkala-Udupi-Mangaluru route and the Shimoga-Thirthahalli-Mastikette-Hulikal-Hosangadi-Siddapura-Udupi-Mangaluru route.

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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 29: Seven out of ten (72 per cent) workers in Karnataka reported having lost their employment during the COVID-19-induced lockdown, according to findings of a survey by Azim Premji University, in collaboration with ten civil society organisations.

The university said in a statement it conducted "a detailed" phone survey of 5,000 workers across 12 states in the country, to gauge the impact of the COVID-19 lockdown on employment, livelihoods, and access to government relief schemes.

The survey covered self-employed, casual, and regular wage and salaried workers and it released the findings for Karnataka on Thursday.

Seventy-six per cent of urban workers and 66 per cent of rural workers lost their employment, the survey findings said.

For non-agricultural self-employed workers and wage workers, who were still employed, average weekly earnings fell by two-third.

More than four in ten salaried workers (44 per cent) saw either a reduction in their salary or received no salary during the lockdown.

Six out of ten households reported that they did not have enough money to buy even a weeks worth of essential items, according to the survey.

Eight out ten households reported a reduction in food intake, while less than three in ten vulnerable households (27 per cent) in urban Karnataka received any form of cash transfer from the government, it said.

In summary, the disruption in the Karnatakas economy and labour markets is enormous. Livelihoods have been devastated at unprecedented levels during the lockdown.

The recovery from this could be slow and very painful, the statement said.

As a response to the findings of this survey, the team which has conducted the survey suggested a universalisation of the PDS to expand its reach and implementation of expanded rations for at least the next six months.

It suggested cash transfers equal to at least Rs.7000 per month for two months, and proactive steps like expansion of MGNREGA, introduction of urban employment guarantee, and investment in universal basic services, among others.