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
if you think muslim killed million, then forget about you,....even you grand grand father never breath in this world. muslim are generous but if you provoke they will hit with full power even if he was alone, not like you people coward you attack in number like dogs
hope the US nukes muslim lands. Islam is responsible for killing millions
we never find Iran by supporting palestinians in their difficult times , only instigate groups like Hamas to keep entire area boil ,
watch situation sunni muslims in Iraq, syria , yeman... do US or Isreil responsible ? even US interfered , who is the benefeciary...
In Yeman entire sea route is controled by US navy , even then weapons are supplied to houthis.... who is supplying weapons weather US or Iran by the help of US navy.... !
Warriors of Muslim? Nonsense. they are killing so many muslims in Yemen, they are the one who started to fight the sunnis and killing them, they have killed many in Algeria, Lebonan using thei terrorism.
Read history of the their trait before blindly trusting. their statement now is just a political gimmic. if they are so worried about muslims and so powerful and talking about defending Saudi why did they defend palastine why dint they fight israel? why they just watching so many diying muslims children an women and men in palastine where is their power. what we hear nothing bnut lies from them. they will not do anything their aim is to conqer power. Rafida or Rawafid is their name!
Warriors of Muslim? Nonsense. they are killing so many muslims in Yemen, they are the one who started to fight the sunnis and killing them, they have killed many in Algeria, Lebonan using thei terrorism.
Read history of the their trait before blindly trusting. their statement now is just a political gimmic. if they are so worried about muslims and so powerful and talking about defending Saudi why did they defend palastine why dint they fight israel? why they just watching so many diying muslims children an women and men in palastine where is their power. what we hear nothing bnut lies from them. they will not do anything their aim is to conqer power. Rafida or Rawafid is their name!
salute fo the true worrier of muslim, IRAN
you are asking help with american slaves, sorry they are loyal dogs die for them not for muslim brothers.
Add new comment