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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."

New Delhi, Mar 29: Prime Minister Narendra Modi on Sunday said that people should not think of COVID-19 quarantine facilities as a prison and spoke with two survivors of the infection during his radio show 'Mann Ki Baat' to establish that it was curable.
The Prime Minister spoke to coronavirus survivors -- Ramagampa Teja and Ashok Kapoor - and urged them to share their success against the infection with people.
The Prime Minister asked people to listen to the survivors who had successfully defeated the coronavirus.
"I have spoken to a few people who were infected from the virus and speaking to such people. While I tried to boost their morale they also lifted my spirits when I talked to them," he said.
Speaking to the Prime Minister during the show, Ramagampa Teja, an IT professional, who tested positive for COVID-19 after returning from Dubai, said that he was frightened when he tested positive for the disease and could not believe that this has happened to him.
He said even his family was very stressed after finding out his COVID-19 positive status. "But their test results came negative, which I took as a great blessing. And since then, there were improvements every day," he said.
Teja was admitted to a government hospital in Hyderabad and was released after 14 days as he successfully overcame the infection. "The first few days were the hardest but the dedicated doctors and nurses at the hospital ensured that I recovered," he added.
He asked people not to be afraid of being quarantined. "People feel that going into quarantine means going to prison. They should know that the government quarantine is for them and their families. I want to emphasise that people must get tested and do not fear quarantine," he added.
The Prime Minister congratulated him and his family and asked him to share an audio clip of his experience. "I would like you to make an audio of your experiences and share it on social media so that it goes viral and removes fear from people's minds," the Prime Minister said.
The Prime Minister also spoke to another coronavirus survivor, Ashok Kapoor, six members of whose family in Agra were tested positive for the deadly virus.
On being asked by the Prime Minister whether they had feared for their lives, Kapoor said, "We were not scared as we received excellent cooperation from the doctors and support staff at Delhi's Safdarjung Hospital."
The six of them were shifted to Delhi and put under quarantine for 14 days where all of them successfully recovered from the infection.
The Prime Minister also commended the spirit of Ashok Kapoor and said: "Your experience came in handy for all. My best wishes to you and your family."
He also urged the Kapoor family to spread awareness regarding COVID-19 in the way they see fit. "Please spread awareness your way and you can feed whoever is hungry, look out for the poor and also spread awareness to people urging them to follow the rules," the Prime Minister said.
"If everyone follows the rules, the country will be saved," the Prime Minister said.
The Prime Minister also thanked the people involved in ensuring the continuous supply of goods and services in the country and advised them to "follow all the safety precautions, take care of themselves and their family members."
Earlier in his address, Modi had asked for the forgiveness of all countrymen, and especially the poor, for the nationwide lockdown in the country in the view of the novel coronavirus. He had then termed it a necessary measure needed to defeat the infection in India.

Kolkata, May 11: Murshidabad district, one of the biggest contributors to the army of migrant workers from West Bengal, received news of unnatural deaths of three of these people since Saturday. While two died in Kerala, one was found dead in a rented house in Odisha.

Residents of Baliaghati village in Murshidabad’s Suti police station area said Safikul Sheikh (31) was killed in a road accident in Kerala. Sheikh’s associates called up his family on Sunday morning and said he had gone to a local market, violating lockdown orders, when the accident took place. Sheikh wanted to return home before Eid but got stranded.

Mohammad Hafijul, one of Sheikh’s relatives, said, “A few days ago a special train from Kerala carried migrant workers to Murshidabad but Safikul did not have the money to buy a ticket. We do not know how his body will be brought back.”

In another incident, a 24-year-old resident of Domkal allegedly hanged himself in Kerala on Saturday. He used to work in a brick kiln. His mother said, “My son was depressed as he could not buy a ticket to board the special train that came to Murshidabad. We have appealed to the local administration to bring back his body.”

In the third incident, Bakul Sheikh (24) died under mysterious circumstances at Sonepur in Odisha where he went five months ago to work as a mason. Sheikh hails from Kohetpur village in Shamserganj. His relatives told the local police that his associates called up and said he was found dead inside the toilet of the house where he was living with other migrant workers.