Anupama Shenoy wants to contest from Udupi’s Kaup

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Mar 21: All bars and pubs in Karnataka will remain closed from Saturday till March 31 as a preventive measure to tackle coronavirus spread, said state Chief Minister B S Yeddyurappa.

As per the government advisory, restaurants including cafes cannot serve food in-house and only takeaways will be allowed.

"All bars/pubs to remain closed from tomorrow till March 31 in Karnataka. In all city municipal corporations across the state, restaurants including cafes cannot serve food in-house, only takeaways will be allowed," said Yeddyurappa in a statement.

15 people have tested positive for COVID-19 in the state till now, said Karnataka Health Minister B Sriramulu on Friday.

The Minister told news agency that two COVID-19 patients, who are recovering, will soon be discharged from the hospital.

The total number of COVID-19 cases in India has now climbed up to 223, including 32 foreigners, the Union Health Ministry said on Friday. As many as 23 people have been cured of the infection in India.

The disease has claimed over 10,000 lives globally.

Bengaluru, Feb 4: The CBI has booked Karnataka cadre senior IPS officers Hemant Nimbalkar and Ajay Hilori along with eight others in connection with Rs 4,000-crore I-Monetary Advisory (IMA) scam in which gullible investors were allegedly cheated in the name of Islamic banking, officials said on Tuesday.

The move came after the CBI received an approval from the Karnataka government to proceed with investigation into alleged role of 1998-batch IPS officer Nimbalkar and 2008-batch IPS officer Hilori, they said.

Along with the two officers, the agency has also named the company IMA, its founder Mansoor Khan and others in the case.

The CBI had approached the state government seeking permission to proceed against the two officers who are in senior positions in the Karnataka Police and allegedly helped IMA founder Masoor Khan, they said.