Amity University confers honorary doctorate on Thumbay Moideen

London/Milan, Jun 2: World Health Organization experts and a range of other scientists said on Monday there was no evidence to support an assertion by a high profile Italian doctor that the coronavirus causing the COVID-19 pandemic has been losing potency.

Professor Alberto Zangrillo, head of intensive care at Italy's San Raffaele Hospital in Lombardy, which bore the brunt of Italy's COVID-19 epidemic, on Sunday told state television that the new coronavirus "clinically no longer exists".

But WHO epidemiologist Maria Van Kerkhove, as well as several other experts on viruses and infectious diseases, said Zangrillo's comments were not supported by scientific evidence.

There is no data to show the new coronavirus is changing significantly, either in its form of transmission or in the severity of the disease it causes, they said.

"In terms of transmissibility, that has not changed, in terms of severity, that has not changed," Van Kerkhove told reporters.

It is not unusual for viruses to mutate and adapt as they spread, and the debate on Monday highlights how scientists are monitoring and tracking the new virus. The COVID-19 pandemic has so far killed more than 370,000 people and infected more than 6 million.

Martin Hibberd, a professor of emerging infectious disease at the London School of Hygiene & Tropical Medicine, said major studies looking at genetic changes in the SARS-CoV-2 virus that causes COVID-19 did not support the idea that it was becoming less potent, or weakening in any way.

"With data from more than 35,000 whole virus genomes, there is currently no evidence that there is any significant difference relating to severity," he said in an emailed comment.

Zangrillo, well known in Italy as the personal doctor of former Prime Minister Silvio Berlusconi, said his comments were backed up by a study conducted by a fellow scientist, Massimo Clementi, which Zangrillo said would be published next week.

Zangrillo told Reuters: "We have never said that the virus has changed, we said that the interaction between the virus and the host has definitely changed."

He said this could be due either to different characteristics of the virus, which he said they had not yet identified, or different characteristics in those infected.

The study by Clementi, who is director of the microbiology and virology laboratory of San Raffaele, compared virus samples from COVID-19 patients at the Milan-based hospital in March with samples from patients with the disease in May.

"The result was unambiguous: an extremely significant difference between the viral load of patients admitted in March compared to" those admitted last month, Zangrillo said.

Oscar MacLean, an expert at the University of Glasgow's Centre for Virus Research, said suggestions that the virus was weakening were "not supported by anything in the scientific literature and also seem fairly implausible on genetic grounds."

Bengaluru, May 24: With 130 new cases, Karnataka's COVID-19 tally crossed the 2,000-mark on Sunday. Most new cases reported have interstate travel history with 97 coming from Maharashtra. The number of active cases in the state is 1,391 and the deaths reported so far is 42, including 2 for non-COVID reasons.

"Ninety seven of the 130 new patients are returnees from Maharashtra, the worst affected state in the country with 47,190 cases till Saturday," said a state health official. 

"The total number of COVID-19 cases across the state is 2,089, with 130 more testing positive in the past 18 hours," said the official.

Forty six patients were discharged from hospitals on Sunday taking the number of cured persons to 634. Of the 46 discharged, 18 are in Davanagere, 20 in Uttara Kannada, 4 in Chitradurga, 3 in Bagalakote and one in Haveri.

Of the 30 Karnataka districts, Chikkaballapura recorded the highest cases on Sunday at 27, followed by Yadgir (24), Udupi (23), Mandya (15) and Hassan (14).

Chikkaballapura is the home district of Medical Education Minister K Sudhakar, a doctor by profession, who is spearheading the fight against the pandemic.

On Saturday, the state's tally shot up to 1,959 due to 196 new cases, the highest single-day rise, with 195 of them crossing over from Maharashtra through the inter-state border, which was opened up as part of partial relaxation of the lockdown.  

The Karnataka government has imposed institutional quarantine on persons traveling in from outside the state, particularly by flight from Maharashtra, Gujarat, Tamil Nadu, Delhi, Rajasthan, and Madhya Pradesh.

Mangaluru, Apr 27: Two more people including an elderly woman have been tested positive for the novel coronavirus in Dakshina Kannada. 

With this the total number of covid-19 cases in the district reached 21, though most of them have recovered and returned home. 

In its today's bulletin, the health and family welfare department confirmed that a 45-year-old man and his 80-year-old mother tested positive for the deadly disease. 

It is learnt that one of them had undergone treatment at a private hospital where a woman from Bantwal, who died of covid-19, was being treated for breathing difficulties, before she was shifted to Wenlock Hospital which is now converted into covid-19 hospital.