Over 250 terrorists killed in IAF air strikes, claims BJP chief Amit Shah

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."

Kashmir, Jan 9: US Ambassador to India Kenneth I Juster along with envoys from 15 other countries arrived in Srinagar on a two-day visit to Jammu and Kashmir on Thursday, the first visit by diplomats since the abrogation of the erstwhile state's special status in August last year.

The Delhi-based envoys arrived in Srinagar by a special chartered flight at Srinagar's technical airport where top officials from the newly carved out union territory received them, officials said.

Later in the day, they would be going to Jammu, the winter capital of the newly created Union Territory, for an overnight stay. They will meet Lt Governor G C Murmu as well as civil society members, they said.

Besides the US, the delegation will include diplomats from Bangladesh, Vietnam, Norway, Maldives, South Korea, Morocco, and Nigeria, among others.

Brazil's envoy Andre Aranha Correa do Lago was also scheduled to visit Jammu and Kashmir. However, he backed out because of his preoccupation here, the officials said on Wednesday.

Envoys from the European Union (EU) countries are understood to have conveyed that they will visit the union territory on a different date and are also believed to have stressed on meeting the three former chief ministers -- Farooq Abdullah, Omar Abdullah and Mehbooba Mufti -- who are under detention.

Officials said envoys of several countries had requested the government for a visit to Kashmir to get a first-hand account of the situation in the Valley following the August 5 decision to abrogate provisions of Article 370 and bifurcate it into two union territories, Jammu and Kashmir, and Ladakh.

This is the second visit of a foreign delegation to Jammu and Kashmir since August 5. Earlier, Delhi-based think tank International Institute for Non-Aligned Studies, a Delhi-based think tank took 23 EU MPs on a two-day visit to assess the situation in the union territory.

The government had distanced itself from the visit with Minister of State for Home G Kishan Reddy informing Parliament that the European parliamentarians were on a "private visit".