Help poor, needy by not cutting their salaries: Karnataka CM

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Mysuru, Jan 20: Fears over CAA and proposed NRC have affected the ongoing 7th economic census. Following complaints of violence against enumerators and registration of FIR with people declining to give information, the state government has asked deputy commissioners and superintendents of police to hold awareness programmes about it.

The planning, programme monitoring & statistics department has requested the home department to provide cooperation at the police station level while additional chief secretary P Ravi Kumar, in his letter to all DCs, has asked them to create awareness. According to sources, enumerators in T Narasipura town of Mysuru district faced resistance as some residents misunderstood the reason for this census.

A senior officer of the directorate of economics and statistics said that additional chief secretary (ACS- Planning, Programme Monitoring & Statistics Department) Shalini Rajneesh has written to the home department and superintendents of police of all districts seeking their help to create awareness about the economic census.

According to sources in the directorate, in many places, people are refusing to share information under the misconception that it is related to CAA/ NRC. “Many are mistaken about the economic census. As a precaution, police help has been sought,” an officer said.

Authorities in Mysuru said the 7th economic census began on December 20 and will conclude on March 30.

“In Mysuru city alone, we need to cover a population of 11 lakh. In T Narasipura, we faced problems due to misconceptions about Census and CAA. We reported the incident which happened in an area where minorities reside in large numbers,” he explained. Mysuru SP CB Rishyanth said his office has not received any direction in this matter.

Bengaluru, Jul 22: A 54-year-old man committed suicide at his home, after he learned that he was tested positive for Covid-19, at Devasandra, in Sadashivanagar.

The deceased, Shivamahadeva, ran a cot shop in Yeshwantpur along with his brother. The police said that he was single and was living with his elder brother and his family.

In another incident, a 50-year-old man, committed suicide fearing Covid-19 and the stigma related to the illness.

The deceased has been identified as Nagaraju, a resident of Doddaballapura and a native of Hesaraghatta, and his body was found at the Hesaraghatta lake.

The police said that during the investigation it was found that the neighbours had accused Nagaraju of spreading the infection.