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."
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Sngha parivar sarkar and Corporate pulled India 10 years back and Looting India by increasing price for oil, gas and other products, neglecting farmers, unorganised sectors, drop in GDP, high cost living, middle class people dropped thier status to poor category, no planning comision, no pancha warshika yogana.....
for common people India became hell and totally frustrated. Rulers are wwasting time to divide india in the name of religion instead of working on developments. Uneducated and stupid personality like him ruling India including burocrates. qualification is not a eligibility to rule in India. Only hate mongers are selected for all the positions. We cannot blame them as the great fools are Peoples of India repeatedly electing hate mongers. will dream "acche din ayega" jai hind
Who he is "BASTURD" chopping finger; if it is against "Stupid modi"
Cheddi sandesh spotted..!
Well said mr. Nityanand Rai. Unculture Indian people dont know how to respect our hon. PM
I am rising my middle finger against Modi. Fool. Chop my finger
If you talk againts INDIAN constituiton ready to face the worst or public may drag you from the position.
Modi is the PM elected represnetative not a God. World has seen several dictators and thier worst end.
So suggest not to jump.
All the comments all we hear is the man agenda and advise from Nagpur else who will talk such anti INDIA slogans.
The more U bring people to do EVIL , the more, RSS will reward the bow bow leaders. and a fact done with the devils to destroy the young hindu generation to do evil in the society.
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