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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."

Islamabad, Jun 3: Pakistan has reported a record 4,132 fresh cases of the coronavirus in the last 24 hours, taking the total number of infections to 80,463, the health ministry said on Wednesday.

The Ministry of National Health and Services said the new infections were detected after conducting a maximum of 17,370 tests in a day.

Of the total cases, Sindh has so far detected 31,086 patients of the coronavirus, Punjab 29,489, Khyber-Pakhtunkhwa 10,897, Balochistan 4,747, Islamabad 3,188, Gilgit-Baltistan 779 and Pakistan-occupied Kashmir reported 289 patients of the viral disease.

"In total 67 patients died in the last 24 hours, taking the tally of deaths to 1,688. Another 28,923 people have fully recovered from the disease," the ministry said in a statement.

The authorities have so far carried out 595,344 tests in the country.

Officials said that Pakistan has more than 100 labs that can conduct over 30,000 tests per day and the number of daily tests will be gradually increased to the maximum level.

New Delhi, May 17: With the highest-ever spike of close to 5,000 cases in the past 24 hours, the COVID-19 count in India has crossed 90,000 on Sunday.

With an increase of 4,987 COVID-19 cases being reported in the last 24 hours, the count has reached 90,927, according to the Union Ministry of Health and Family Welfare.

The total number of active cases in the country stands at 53,946 today, while 2,872 deaths have been recorded due to the infection so far, with one patient having migrated. 120 deaths were reported in the last 24 hours.

However, on the positive side, close to 4,000 patients have also been cured and discharged in the past 24 hours, taking the tally of cured patients to 34,108.

With 30,706 confirmed cases, Maharashtra remains the worst-affected by the infection in the country.

It is followed by Gujarat and Tamil Nadu, with 10,988 and 10,585 cases, respectively.
The national capital, with 9,333 cases, is also one of the regions which is badly affected by the infection.