II PU chemistry re-exam on March 29

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Jul 22: Karnataka's Covid-19 task force on Tuesday decided that the state government will regulate the supply of Remdesivir, the drug used in the treatment of coronavirus infected patients, to private hospitals to check black marketing and hoarding.

"Remdesivir which is currently available in the government hospitals will be supplied to private hospitals through the government.

This will help curb black marketing of this drug," Medical Education Minister K Sudhakar's office said in a release.

Along with Sudhakar, other task force members, including Health Minister Sriramulu, Deputy Chief Minister C N Ashwath Narayan and Chief Secretary T M Vijay Bhaskar attended the meeting. However, Home Minister Basavaraj Bommai was not part of it as he was out of Bengaluru.

At the meeting, the government has also fixed the rate for Covid-19 tests in private labs- Rs 2,000 for government referred cases and 3,000 for self-reporting cases.

It was also decided to purchase 4 lakh antigen test kits and 5 lakh swab test kits to ramp up testing, the release said, adding that approvals have also been given for additional drugs for the treatment of Covid-19 patients.

The decisions also included increasing monthly salary for Ayush doctors to 48,000, MBBS doctors to 80,000 and nurses to get 30,000 for next 6 months.

The task force also made it clear that private hospitals have to reserve 50 percent beds for the government for Covid-19 treatment. The remaining 50 percent can be used by the private hospitals for Covid-19 and non-Covid-19 treatment.

Private hospitals provide treatment under Ayushman Bharat scheme (ABARK) for Covid-19 patients.

Those cases in which treatment does not cover under the scheme can be charged as per the user charges, the release said.

A committee will be formed to supervise and recommend the purchase of equipment and medicines for Covid-19 treatment, which will be headed by ACS, ITBT Department.

Approval has been given for the procurement of N-95 masks and lakh PPE kits for the safety of healthcare workers. The decision also has been taken to connect oxygen pipeline to 4,736 beds in 17 government medical colleges, which will enable high flow oxygen for these beds besides being beneficial for future use as well.

According to the release, 16 RTPCR and 15 Automated RNA extraction units will be established to ramp up testing and this will help achieve the target of 50,000 tests per day. "On the whole approvals given for purchase of equipment and upgradation of existing facilities at government hospitals is estimated to be about Rs 500 Crore," it added.

Mangaluru, Jan 30: A dentist has been arrested by the Dakshina Kannada district police on charge of sexually harassing a woman patient during treatment at a hospital in Beltangady taluk.

The accused has been identified as Dr Sudhakar. He is facing charges under section 354, 354A(1)(I) of IPC.

The incident occurred yesterday when a local woman had been to the government hospital at Kasaba village in Beltangady for dental treatment.

According to the woman, Dr Sudhakar deliberately touched her body inappropriately and sexually harassed during treatment.

The shocked woman went to the jurisdictional Beltangady police station and lodged a complaint. The doctor was arrested and produced before the court.