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."
Comments
Sure he will pay for such barbaric henious act, just a matter of wait and watch.
Retaliate kill him and supportng RSS leader in same manner.
Uncultured barbarian act...!! Culprit should be hanged in order to put end to these ruthless act.
Shourya diwas part 2 by VHP? India is becoming famous in negative sense day by day, all credit to right extremist hindu groups!
Give them more power, we will become next Taliban, Nazi!!!
That whole area of Indian subcontinent (India, Pakistan, Bangladesh, Sri Lanka etc) is still pretty much brutally primitive. Not only that they have not achieved much in materialistic standards in seven decades of independance but in terms of behavior also, the people on the ubcontinent have remained to be quite primitive !
RSS should be happy today, as one of their cadre has done them proud. RSS has made animals out of humans. This is what RSS wants in India. Great. Bharat Mata ki Ja
Love jihad is a very dangerous practice which is now spreading in whole of India. Though the murder of a lab on the name of love jihad in Rajasthan can not be justified but those responsible for this practice must be identified and sent in jail with exemplary punishment.
Check the original video. The cries of the poor helpless man are still haunting me. How can somebody be so ruthless? Comparing this scumbag to an animal is an insult to whole of animals. As lynching was a common phenomenon by the so-called fully tolerant, totally peace loving Hindus, I felt perhaps it should be the work of few uncivilized religious bigots. Now I wonder the difference between Hindus and the other peace loving religion. If Hindus have muscle power, money power, position and the required resources, they can be one of worst sects or an ideal competitor for the other peace loving religion in this world.
@Bhageeraha Bhaira,
What you said is applicable to all. Many so called "peace lovers" killed poor peopel.
Many Hindus got killed by muslim terrorists. Then no news.
Mr Kumar! Killing is not intolerance. This is terrorism. The word ‘Intolerance’ can be used if someone doesn’t tolerate the smell of your body.
Intolerance... Attack on muslims increasing
Shocking incident
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