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Bengaluru, Jul 4: A young woman doctor at the Kempegowda Institute of Medical Sciences, Bengaluru, who had raised an alarm about faulty PPE kits and shortage of N95 masks, has tested positive for the covid-19.

Taking note of this, Mysuru-Kodagu MP Pratap Simha brought the issue to the attention on Medical Education Minister Dr K Sudhakar on Twitter. Tagging the minister, the MP tweeted, “For your information and I feel, it is a genuine concern.” “Amulya Gowda treated Covid patients at KIMS.

Karnataka Medical Association took to social media to express concern over the development. In a Facebook post it wrote: "Amulya C Gowda is a frontline worker who risks her life every single day. Last week she raised an alarm about faulty PPE kits and shortage of N-95 masks. But the Administrative Medical Officer (AMO) at KIMS, shunned and chastised her for raising this issue. Ever since, she has been buying her own N-95 masks. Today, she tested positive for Covid-19 and appealed to the Hospital authorities and raised her genuine concerns over the faulty protective gear, but she was again harassed and humiliated for raising the issue."

Dr DH Ashwath Narayana, Medical Superintendent, KIMS Hospital, said that all PPE kits at KIMS were certified by SITRA (South India Textiles Research Association), Coimbatore and that they had purchased N-95 masks available in the market. "One cannot claim faulty PPEs are the reason for testing positive. We have purchased whatever PPE kits are available in the market. Healthcare workers across hospitals, private and government, and policemen are also getting infected."

As the new rules by the state government allow healthcare workers home isolation, Narayana said the doctor is recuperating at home and that she is doing fine.

Medical education minister Dr K Sudhakar tweeted, "Doctors are our frontline warriors battling the pandemic. Government has taken all necessary measures to ensure safety of our doctors. I have taken note of supply of defective masks and PPE kits to KIMS doctors and ordered an enquiry. Management will be held responsible if found guilty."

Bengaluru, Jul 9: The total number of Covid-19 infections in Karnataka on Thursday breached the 30,000 mark as the state reported its biggest single-day spike of over 2,200 new cases and 17 related fatalities, taking the death toll to 486, the Health department said.

The day also saw a record 957 patients getting discharged after recovery, out of which 606 were from Bengaluru Urban.

Out of the 2,228 fresh cases reported on Thursday, a whopping 1,373 were from Bengaluru Urban alone.

The previous biggest single-day spike was recorded on July 8 with 2,062 cases.

As of July 9 evening, cumulatively 31,105 Covid-19 positive cases have been confirmed in the state, which includes 486 deaths and 12,833 discharges, the Health department said in its bulletin.

It said, out of 17,782 active cases, 17,325 patients are in isolation at designated hospitals and are stable, while 457 are in ICU.

"Death rate in Karnataka is 1.49 percent, while in Bengaluru is 1.28 percent, and our target is to bring it below 1 percent," Medical Education Minister K Sudhakar told reporters.

"The reason for spike in cases in Bengaluru and other places in recent days is because during the last four months of lockdown we had controlled it very well, but as we relaxed lockdown for economic activities we did not follow certain precautionary measures like distance among other things," he said.

The Minister also conceded that there were lapses on part of the government also in terms of tracing and tracking.

"It has to be improved especially in Bengaluru and we are taking steps in this regard."

Among the 17 dead seven were from Dharwad, two each from Hassan, Kalaburagi, Mysuru, and one each from Raichur, Uttara Kannada, Tumakuru and Davangere.

The deceased include 13 men and 4 women.

The dead are all either with a history of Severe Acute Respiratory Infection (SARI) or Influenza-like illness (ILI).

Out of 2,228 fresh cases today, contacts of the majority of the cases are still under tracing.

Among the districts where the new cases were reported, Bengaluru Urban accounted for 1,373, followed by Dakshina Kannada (167), Kalaburagi (85) and Dharwad (75).

Bengaluru urban district tops the list of positive cases, with a total of 13,882 infections, followed by Kalaburagi (1,901) and Dakshina Kannada 1,701.

Among discharges Bengaluru urban tops the list with total 2,834, followed by Kalabuagi (1,392) and Udupi (1,206).

A total of 7,79,209 samples were tested so far, out of which 20,028 were tested on Thursday alone.

So far 7,28,887 samples have been reported as negative, and of them 17,568 were reported negative today.

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