People in this Karnataka city boycott health survey mistaking it for NRC

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Belagavi, 12: Even though the investigation into the four abandoned country pistols that were recovered by the Karnataka police on the outskirts of Waghawade village in Belagavi taluk last weekend did not make any headway, the police are verifying if the weapons had been used by the assassin of Gauri Lankesh for training.

Four country pistols were found abandoned on the outskirts of Waghawade on Sunday. Locals informed that the police had taken the weapons for inspection.

Prima facie it appeared that the weapons were rusted and had not been used for long. Cases had been registered against unidentified persons and investigations were in progress.

After reports that the weapons could have been used for training by the assassin of Gauri Lankesh in the forests in Khanapur, a few kilometres away from the spot wherein they were found, police have been looking into this angle too.

Sources said the condition of the weapons indicated that they have not been used for decades but to allay doubt all aspects were being looked into.

Mangaluru, Mar 21: Southern Railway has cancelled some more trains in view of poor patronage due to restrictions in place to prevent the spread of COVID-19.

Train No.16565 Yesvantpur-Mangaluru Central Weekly Express has been cancelled on March 22 and March 29.

Train No.16566 Mangaluru Central-Yesvantpur Weekly Express will not run on March 23 and March 30.

Train No.10215 Madgaon-Ernakulam Weekly Superfast Express will not be operated on March 22 and March 29.

Train No. 10216 Ernakulam-Madgaon Weekly Superfast Express will not run on March 23 and March 30.

Train No.16355 Kochuveli-Mangaluru Junction Antyodaya Express, scheduled to leave Kochuveli on March 21, 26 and on March 28 stands cancelled.

Train No.16356 Mangaluru Junction-Kochuveli Antyodaya Express, scheduled to leave Mangaluru Junction on March 22, 27 and March 29 will not be operated, a Southern Railway release said.

Hubballi–KSR Bengaluru–Hubballi Janashatabdi (Daily) Express (12079/12080), Mysuru–Yelahanka–Mysuru Malgudi (Daily Express)

(16023/16024), Yeshwantpur–Pandharpur–Yeshwantpur (Weekly) Express (16541/16542), Mysuru–KSR Bengaluru–Mysuru Rajyarani Express

(16557/16558), Shivamogga–Yeshwantpur –Shivamogga Express Special (06539/06540), Mysuru–Renigunta–Mysuru Weekly Express

(11065/11066), Mysuru–Sainagar Shirdi–Mysuru Weekly Express (16217/16218), Yeshwantpur–Mangaluru–Yeshwantpur Weekly Express (16565/16566), and Belagavi–Mysuru Vishwamanava (Daily) Express (17326).

Mysuru–Belagavi Vishwamanava (Daily) Express (17325) has been cancelled till April 1.

The services of Train No.16023/16024 Mysuru-Yelahanka-Mysuru Malgudi Express has been cancelled from March 20 to March 31.

Similarly, Train No.16557/16558 Mysuru-KSR Bengaluru-Mysuru Rajya Rani Express will not ply from March 20 to March 31, according to a railway release.

Train No. 17325 Belagavi-Mysuru Vishwamanava Express will not operate from March 21 to April 1 and the corresponding service of Train No.17326 from Mysuru to Belagavi will remain cancelled from March 20 to March 31.

The authorities have also cancelled the service of Train No.11065 Mysuru to Renigunta weekly express which was to operate on March 20 and March 27 and the corresponding service from Renigunta to Mysuru on March 21 and March 28.

Likewise, Train No.16217 Mysuru to Sainagar Shirdi weekly express will not operate on March 23 and March 30 and the journey in the return direction of Train No.16218 Sainagar Shirdi to Mysuru weekly express on March 24 and March 31 stands cancelled.

The railway authorities have cancelled the Hubballi-KSR Bengaluru-Hubballi Janshatabdi superfast express from March 20 to March 31 and the services of Train No.06539/06540 Yasvantpur- Shivamogga Town-Yasvantpur express for March 20, 24, 25, 26, 27 and March 31 stands cancelled.

The other trains cancelled for a limited period include Train No.16541 Yasvantpur to Pandharpur weekly express for its journey commencing on March 19 and 26 and the return journey on March 20 and 27.