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Bengaluru, May 22: Amid the fourth phase of nationwide COVID-19 lockdown, inter-state travel from Karnataka is now permitted with the consent of the receiving state, informed Praveen Sood, Karnataka Director General of Police (DGP) and Inspector General (IG).

"Inter-state pass is not required to go out of Karnataka as long as you have the consent of the receiving state," he said.

The order follows MHA's recent announcement of relaxed guidelines amid the nationwide lockdown.

"Due to lockdown, migrant workers, pilgrims, tourists, students and other persons are stranded at different places. They would be allowed to move as under," read the new guidelines while asking states to designate nodal authorities to facilitate the interstate movement.

The Centre has extended the lockdown till May 31 across the country.

Bengaluru, Apr. 10: Karnataka Congress leader DK Shivakumar on Thursday appealed to party workers to save the lives of people of the state and show solidarity with the people in need amid the coronavirus lockdown.

"Humble appeal to Congress party workers that the time has come to do our best to save the lives of people of Karnataka. Hospitals across Karnataka are running short of blood. This is a call for able-bodied to volunteer & donate blood. Let us show solidarity with people in need," Shivakumar tweeted.

With 16 fresh COVID-19 cases reported in the last 24 hours, the total number of confirmed cases in Karnataka reached 197 on Thursday, according to the state's Health Department.

India's total COVID-19 cases rose to 5,865 on Thursday, with 591 new cases reported in the last 24 hours, according to the Ministry of Health and Family Welfare.

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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