Seat sharing deal for LS polls in Karnataka: Cong likely to field 18-20 candidates; JD(S) 8-10

Bengaluru, Mar 4: With the number of Coronavirus positive cases in India increasing, health department officials in Karnataka are working round the clock to keep citizens safe.

But citizens are already panicking with 97 people in Bengaluru rushing to the government-run Rajiv Gandhi Institute for Chest Diseases (RGICD) on Tuesday with symptoms matching the coronavirus.

Karnataka Chief Minister BS Yediyurappa has now appealed for calm saying there is no coronavirus in the state.

"There is a difference in what appears in the media and what is on the ground. No need to panic. PM Modi is also looking into this. My health minister addressed the media and no one needs to panic. We are ready to tackle the situation," he added.

Dr. Nagaraj, director of RGICD, said the screening process began at the hospital on January 22 and they would see some 15-20 patients and take 5-6 swabs.

"Because of apprehensions, we saw 978 patients and took 27 swabs. We have also admitted 4 patients in the isolation ward," he added.

As of today, there are 5 patients admitted in the isolation ward of RGICD. Two came in close contact with the infected techie in Telengana and three foreign nationals from Japan, Saudi Arabia, and Iran.

Tech parks on high alert

At the Manyata Tech Park in the city, a company sent out a circular regarding one of their associates who had travelled from a Level 3 country to India and had flu-like symptoms.

It says that the associate was advised to receive necessary screening and observation as mandated by the Karnataka State Health Department. The associate was screened by an authorized medical agency and determined to be asymptomatic.

As of Wednesday, the company located in the G3 campus of Manyata Tech Park has begun disinfecting and sanitizing the work location and all associates working out of this location have been advised to work from home until March 6.

A statement issued by Embassy spokesperson on March 4 to India Today TV indicated the authorities have activated their response plan.

"As of March 4, we are not aware of a single positive case for the virus in more than 2,00,000 people who work in our business parks. We do understand that one employee of a company at one of our parks who had travelled from a Level 3 country was screened in the last 36 hours and determined to be asymptomatic.

As a precaution, the premises are being disinfected and sanitized. The fact remains, we are not aware of a single confirmed case within over 15 business parks across India," the statement said.

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