Baliga murder: Photographer Manujanth arrested for harbouring NaMo Naresh

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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/Kasaragod, Jun 30: In what appears to be an ego clash between the officers of Karnataka and Kerala, around 150 Mangalureans including 12 pregnant women were evicted from the lodges in Kasaragod in the middle of the night and sent to Mangaluru.

Expressing shock over the incident, Mangaluru MLA U T Khader hit out at the authorities concerned for the lack of concern towards the stranded passengers. “If IAS officers don’t have humanity, what is the use of the IAS tag. Officers in the two states should learn to speak to one another and solve people’s problems,” he said apparently addressing DCs of Kasaragod and Dakshina Kannada. 

The 150 passengers had arrived on Saturday from Dubai in a chartered flight arranged by the Karnataka Cultural Foundation. The flight landed in Kannur after it was denied permission to land in Mangaluru.

But Karnataka’s nodal officer for stranded persons outside India C N Meena Nagaraj, an IAS officer, called up Kerala officials and questioned why the flight was allowed to land in Kannur, Khader said. She reportedly told Kerala officials that the passengers should be quarantined in the cities of arrival and that Karnataka would not take them in.

In the meantime, the Karnataka Cultural Foundation arranged seven buses to take the passengers to Mangaluru. By the time it was conveyed to them that they would not be allowed to enter Mangaluru, the buses had reached Kasaragod district. The representatives of the organisation made frantic calls to several political leaders. Congress leader and district panchayat standing committee chairperson Harshad Vorkady said he got a call for help around 10pm on Saturday. He spoke to owners of three lodges to accommodate them. The lodges were used by the district administration as quarantine centres. 

The lodge owners said they would take the passengers in only if the Kasaragod tahsildar gave permission. “So I called up the tahsildar. He only wanted to know who will pay for the lodging and food. When I told him that the passengers will pay, he gave permission. By midnight, all the passengers were put up in the three lodges,” he said. The police were also at the spot, he said.

According to the Covid protocol, those arriving from abroad should be in institutional quarantine for seven days and in room quarantine for another seven days. But by 4pm on Sunday, the police returned to the lodges and asked the passengers to vacate. They said it was the order of the collector. They produced the order to the lodge owners. The office-bearers of the Karnataka Cultural Foundation said they sought time from the Kasaragod police to arrange rooms in Mangaluru. But Kasaragod police denied it. 

On Sunday, there were Covid deaths in Mangaluru and the Mangaluru deputy commissioner was tied up as residents were objecting to the funeral of one of the victims. “By night, the police started threatening the lodge owners. The members of the Foundation said they would shift the passengers by Monday morning. But the collector would not listen,” said Harshad.

Around 11pm, the Kasaragod district administration brought in four KSRTC buses and sent all the 150 passengers to Mangaluru, he said. By 1am the buses crossed the Thalapdy border and Khader took over from there. But the MLA was livid with how officials treated the people. Collector Sajith Babu in a statement said his enquiry found that the tahsildar did not give permission to accommodate the passengers in Kasaragod lodges.

Mysuru, Mar 18: Even though the migration season is coming to end and the winged visitors are set to fly back, the water bodies where most birds nest and breed are under close surveillance with the report about spread of bird flu in Mysuru as unusual death of birds can be a cause for worry and hence the authorities are on high alert.

At Karanji Lake, the birds are watched in detail twice – morning and evening. If any sick bird or dead bird is noticed, the Zoo Vets are alerted. So far, no such birds had been sighted. The surveillance data is maintained every day. Intensive surveillance and passive surveillance is done.

Zoo Authority of Karnataka (ZAK) Member Secretary B P Ravi said the birds are doing well and there is no cause for worry with their health monitored constantly along with tests on the bird droppings done every month at the National Institute of High-Security Animal Diseases in Bhopal.