People of Bantwal will make you MLA once again: Poojary tells Ramanath Rai

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Jan 13: Supporting former state chief minister and JD(S) leader HD Kumaraswamy who released a "CD on the December 19 Mangaluru violence", Dakshina Kannada party unit president Mohammed Kunhi on Monday demanded a probe into the violence.

Mr Kumaraswamy, who released 35 video clips related to the violence, had demanded the suspension of the Police Commissioner and also sought a house committee to probe the incident.

Addressing media personnel here, Kunhi questioned, "If the police department did not commit any mistake why is the state government looking worried about the CDs released by Kumaraswamy?"

Bengaluru, Jul 5: Karnataka Chief Minister BS Yediyurappa has asked officials to ensure that all necessary arrangements for COVID-19 patients must be carried out efficiently and transparently, Medical Education Minister Dr K Sudhakar said.

"Karnataka is in a better position due to the efforts and hard work of ministers, doctors, officials and all staff. The cases have increased in Bengaluru and some other districts in last few days due to various reasons. We all have to work hard and contain the spread of virus," Dr Sudhakar told media on Saturday.

"Responsibilities related to policy formulation, preparation of guidelines, communication to media and management of war room have been assigned to me. Deputy Chief Minister Ashwath Narayan has been given the responsibility of managing COVID-19 care centres and Revenue Minister R Ashoka and Chief Minister's political secretary Vishvanath have been given the responsibility of managing private hospitals. The Chief Minister has instructed all of us to work in synergy," he said.

Dr Sudhakar said the matter of imposing lockdown in the state again was discussed in the task force meeting. "I and Deputy Chief Minister suggested that lockdown is not necessary at this stage. The Chief Minister will take a decision on this matter," he added.

Home Minister Basavar Bommai, Health Minister B Sriramulu, Revenue Minister R Ashoka and senior officials were present in the task force meeting.