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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."

Islamabad/Dhaka, May 25: The coronavirus pandemic and lockdowns coupled with travel restrictions and social distancing norms have muted the Eid celebrations in Pakistan and Bangladesh as worshippers in the two Muslim-majority countries marked the end of Ramzan in strictly-regulated prayer congregations.

A large number of people in the two countries were forced to stay indoors on the occasion of Eid al-Fitr, marking the end of the fasting month of Ramzan, due to the fears of contracting the novel coronavirus which has killed nearly 3.5 lakh people and infected over 5.4 million across the world.

In Pakistan, the government has issued strict instructions to observe social distancing while offering Eid prayers and asked people to avoid visiting relatives and hosting parties.

As the railways remained closed, many people could not travel to their hometowns for the most important festival.

Eid congregations were held at open places, mosques and Eidgahs in all major cities and towns while following strict standard operating procedures (SOPs) of social distancing and other precautionary measures. But in some areas, the people did not adhere to the SOPs and were seen thronging to their favourite shops to celebrate Eid.

Pakistan Prime Minister's Special Assistant on Health Zafar Mirza on Friday said the deadly infection would continue to multiply if precautions are not taken.

Earlier this month, the government announced the lifting of the countrywide lockdown imposed to curb the spread of the COVID-19 in phases, even as infections continued to rise in the country.

Pakistan's coronavirus cases on Monday reached 56,349 with 1,748 new patients while the death toll climbed to 1,167 after 34 people lost their lives in the last 24 hours.

The trajectory showed that the number was steadily going up with authorities fearing a rise in cases in the wake of the easing of lockdown before Eid.

But Prime Minister Imran Khan cited the economic havoc the virus restrictions had wreaked on citizens as the reason behind the decision to ease the restrictions.

He urged Pakistanis to forgo the traditional Eid festivity in view of the hundreds of fatalities caused by the coronavirus and the lives lost in Friday's plane crash in Karachi.

Ninety-seven people, including nine children, were killed and two passengers miraculously survived a fiery crash when a Pakistan International Airlines plane with 99 travellers on board plunged into a densely populated residential area near the Jinnah International Airport.

Most of the victims were travelling home to celebrate Eid.

In Bangladesh, millions of Muslims joined the strictly-regulated prayer congregations across the country.

Thousands of worshippers attended the prayer services at the Baitul Mukarram National Mosque in Dhaka while following the health and social distancing protocols to limit the spread of the coronavirus, bdnews24.com reported.

Despite the government directive for children and senior citizens not to participate in Eid prayers, many children and people aged over 60 attended the Eid prayers. Although social distancing rules were maintained to a large extent, people were seen flouting the norms, the report said.

As per the government order, no Eid congregation will be held in an open space, but people can perform the Eid prayers in mosques. However, everyone coming to the mosques for prayer must wear a mask, follow social distancing and other hygiene rules, said Islamic Foundation Secretary Kazi Nurul Islam.

On Sunday, Bangladesh reported 28 new fatalities, the highest single-day increase, bringing the death toll to 480.

The number of coronavirus cases in the country rose to 33,610 after 1,532 people tested positive on Sunday.

Kabul, May 11: Four back-to-back roadside bombs exploded in a northern district of Afghanistan's capital Kabul on Monday, wounding four civilians including a child, police said. Kabul police spokesman Ferdaws Faramarz said a clearance team was at the site of the attacks.

Militants have carried out several roadside bombings and rocket attacks in Kabul and other parts of the country in recent weeks, but Monday's four consecutive explosions appeared to be the first coordinated effort for some months.

The Taliban has not carried out any large attacks in the city since they signed a landmark withdrawal deal with the US in February, meant to pave the way for peace in the country. No group has claimed the attacks. The explosions come as authorities are trying to impose a lockdown in the capital to curb the spread of coronavirus in the country.