Mangaluru: Modi welcome banner puts citizens in danger

Bengaluru, Mar 11: With the outbreak of coronavirus, Chief Minister BS Yediyurappa on Tuesday said that over 1,000 people in the state have been identified for observation.

"So far, 1048 people have been identified for observation. Out of which 446 samples have been sent for testing. 389 samples have tested negative. Four samples have tested positive," Chief Minister Yediyurappa told reporters.

Earlier today, Health Minister B Sriramulu said that family members of those who tested positive for COVID-19 have been isolated and their health is being monitored.

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, June 12: The Karnataka government has withdrawn its notification that allowed factories to extend working hours up to 10 hours a day and 60 hours a week, with immediate effect.

The extension of work hours was from eight hours a day and 48 hours a week. On May 22, the government had exempted all the factories registered under the Factories Act, from the provisions of Section 51 (weekly hours) and Section 54 (daily hours), till August 21 subject to certain conditions.

"Whereas, having examined the provisions further, the Government of Karnataka now intends to withdraw the said notification," the state government in a fresh notification dated June 11 said.

It said, "Therefore, in exercise of the powers conferred under Section 5 of Factories Act, 1948 (Act No. 63 of 1948), the Government of Karnataka hereby withdraws the Notification dated 22-05-2020 with immediate effect."

According to the Karnataka Employers' Association, a petition was filed in the High Cour challenging the May 22 notification as "illegal, arbitrary and in violation" of Section 5 of the Factories Act which permits exemption from any of the provisions of the Factories Act only in case of Public Emergencies'.

During the course of hearing on June 11 an observation was made by the High Court, that it may have to quash the notification unless the government clarifies as to what is the 'Public Emergency' involved to enhance the working hours by exempting some provisions of the Factories Act, it said.

The court further observed that the government should make a submission on June 12 in this behalf. However, the government withdrew the notification on June 11 itself. Recently states like Rajasthan and Uttar Pradesh too had retracted after permitting extending work hours.