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Bengaluru, Feb 9: The Karnataka Health and Family Welfare Services Department has kept 138 persons across the state under observation in the wake of novel coronavirus (nCov) scare, a health official said on Saturday.

"We are observing 138 people across the state, including in Bengaluru," the department's Communicable Diseases Wing Joint Director Prakash Kumar told news agency.

Though no coronavirus-positive case has been reported from Karnataka so far, four persons have been admitted in a state hospital under medical observation, Kumar confirmed.

Of the 104 samples sent for testing from the state, 85 have, so far, been declared negative. As many as 130 persons in the state were kept under home-isolation observation.

Four Karnataka districts bordering Kerala — Kodagu, Mangluru, Chamarajanagar and Mysuru — continue to be under surveillance after three positive coronavirus cases were reported in Kerala.

On Saturday, it was reported that three persons from Udupi were isolated at the Ajjarkad Government Hospital. Two of them had travelled to China while the other had returned to Udupi from Japan.

From January 20 till Saturday, 14,153 passengers underwent thermal screening at the Kempegowda International Airport, including three who had a history of visiting China’s Wuhan, the epicenter of the nCoV outbreak.

The '104 Arogya Sahayavani' call centre, which people can call for guidance on coronavirus, has clocked 1,792 calls so far.

"In case people with recent travel history to China and other affected countries develop any symptoms, they are requested to call 104 or health authorities and provide all necessary details in order to take necessary measures and are requested to be quarantined at home," reiterated the department.

Three confirmed cases of coronavirus were earlier reported in Kerala and over 722 deaths were confirmed around the world, mostly in mainland China.

University of Oxford researchers have claimed that a cheap and widely available drug called dexamethasone can help save the lives of patients who are seriously ill with coronavirus.

Scientists working on the Recovery Trial found the drug could help patients on ventilators and oxygen, but had no effect on those who did not need help breathing.

“Based on these results, one death would be prevented by treatment of around eight ventilated patients or around 25 patients requiring oxygen alone,” researchers said in a statement.

Matt Hancock, the health secretary, tweeted: “This global first exemplifies the power of science.”

“I’m absolutely delighted that today we can announce the first successful clinical trial for a treatment for Covid-19,” Mr Hancock said.

Recovery Trial experts said a randomised group of 2,104 patients was given 6mg of dexamethasone per day for 10 days, while another group of 4,321 were given normal treatment.

Dexamethasone reduced deaths by one-fifth in patients on oxygen feeds and by one-third in those who needed a ventilator to breathe, preliminary results showed.

Mr Hancock added: “This is a huge step forward and it’s because we’ve backed the science.”

Martin Landray, professor of medicine and epidemiology at the Nuffield Department of Population Health, University of Oxford, and one of the trial’s chief investigators, said in a statement: “These preliminary results from the Recovery Trial are very clear – dexamethasone reduces the risk of death among patients with severe respiratory complications.

“Covid-19 is a global disease – it is fantastic that the first treatment demonstrated to reduce mortality is one that is instantly available and affordable worldwide.”

Udupi, May 31: As many as 10 people have been tested positive for coronavirus in Udupi district today. 

The district has registered a total of 187 positive cases so far. Majority of the positive cases in Udupi district have inter-state travel history to Maharashtra.

Meanwhile, 14 people including three children who recovered from COVID -19 discharged from Government Hospital in Kundapura, in Udupi district.

Kundapura AC Raju, DHO Dr Sudhirchandra Sooda, taluk medical officer Dr Nagabhushan Udupa handed over a rose to all the discharged. With this, a total of 64 persons have been recovered and discharged in the district.