In coalition govt, nothing will be in interest of citizens, claims Santosh Hegde

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Bengaluru, May 17: At least 54 new COVID-19 positive cases have emerged since last evening, raising Karnataka's tally to 1,146, a health official said today.

Among the 1,146 cases, 611 are active and isolated in designated hospitals across the state, 497 patients got discharged and 37 died of the virus.

Of the new cases, Mandya district alone reported 22 cases, followed by 10 in Kalaburgi, 6 in Hassan, 4 in Dharward, 3 each in Kolar and Yadgir, 2 each in Dakshina Kannada and Shivamogga and 1 each in Udupi and Shivamogga.

New Cases Reported: 54
Total Active Cases: 611
Total Discharges: 497
Total Covid Deaths: 37
Death of Covid +ve patient due to Non-Covid cause: 1
Total Positive Cases: 1146

Bengaluru, Jan 24: On the last day of his four-day trip to Davos, Switzerland, to attend the World Economic Forum, chief minister BS Yediyurappa urged the global business community to invest in cities other than Bengaluru in the state.

On Thursday, while extending an invitation to entrepreneurs to participate in the Global Investors Meet in November in Bengaluru, Yediyurappa highlighted the “conducive investment climate” in the state vis-a-vis others by pointing to its 7% growth rate which is much higher than the national average of below 5%.

He also pointed to the state’s rich history and the fact that it is home to a number of desi MNCs such as Infosys, Biocon Wipro and Dynamatics. “At the same time, the state has one of the lowest unemployment rates compared to the national average,” Yediyurappa said.

In his address to heads of businesses, industries minister Jagadish Shettar also urged investors to consider Tier 2 and 3 cities for investment. “Land banks have been created in Tier 2 and 3 cities and regional connectivity has improved. Let us strive to place Karnataka on a highgrowth path,” Shettar said.

Lending a “helping hand”, Union minister Piyush Goyal, in his address, appealed to the community to invest in Karnataka, which “has a robust and congenial industrial atmosphere”, but also urged them to spread “tentacles” to all parts of the country.