Kasargod Magistrate, who thrashed cops in Sullia, commits suicide

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, July 13: With the confirmation of four more deaths related to novel coronavirus, the covid-19 death toll in Dakshina Kannada has mounted to 50.

In fact, the four fatalities had occurred on Saturday. Today the authorities concerned that they were tested positive for Covid-19.

The deceased include two septuagenarians, a sexagenarian, and a 53-year-old. All of them were male.

Dakshina Kannada deputy commissioner Sindhu B Rupesh revealed that their comorbidities were diabetes in ICU, pneumonia in ICU, hepatitis in ICU, severe acute  respiratory infection and carcinoma of the lung respectively.

Bengaluru, May 7: Fear and anxiety gripped migrant workers who lined up at police stations in the city on Wednesday to register for train services without knowing that the state government had cancelled the train facility.

Senior officials in South Western Railway said they were ready to run special trains for migrant workers. On Tuesday evening, the state government decided to withdraw the requests made for 13 such trains to north India after realtors said they need the labourers here.

Migrants continued to stream into the railway station at Majestic, Bangalore International Exhibition Centre and even the bus station hoping for some travel arrangement. Many who were aware of the government web portal, stood in front of the BBMP ward office or police stations for enrolment.

In Varthur, over 100 migrants stood in front of the police station and sought to know what happened to the forms they had submitted four days ago. "We first went to the BBMP office and were shooed away by an official who directed us to go to the police station. We want to go home and demanded that the police help us. There was no response first. Then they came out and beat us," said Pintu Kumar from Mohanpur of Bhagalpur district in Bihar.

Though a video clip accidentally shot by Kumar showed two police personnel charging the cane at them, a police officer from the Varthur station, however, disputed the claim. "The video doesn’t show the cane landing on any person. We were beating the seat and tyre of two-wheelers to send the migrants away," he said.

At Mahadevapura, the workers came in groups and submitted the forms at the police station.

At the railway station in Majestic, a group of labourers from Bihar, Uttar Pradesh and Jharkhand had walked from several areas in south Bengaluru only to be told that there is no train. Mahendra, a labourer from Jharkhand, said they received 5 kg rice and nothing else in the last 45 days. "Now, I don’t want food. I don’t want the job or money. I can't get stuck here. I want to go home,” he said.

'Restore dignity'

Activists and leaders wrote an open letter to Chief Minister B S Yediyurappa questioning the decision to cancel trains without consulting labourers and protesting the violation of their fundamental rights.

The letter had support of 522 organisations and individuals, including Dalit rights organisations and trade unions. It urged the government to restore the dignity of the migrant workers. "We demand recognition of the autonomy and dignity of the migrant workers to decide their travel plans. No one should be forced either to stay back or to return to their home states," it said.