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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, Jan 30: Tension spiralled in Jamia Nagar on Thursday after a man fired a pistol at a group of anti-CAA protesters, injuring a Jamia Millia Islamia student before walking away while waving the firearm above his head and shouting "Yeh lo aazadi" amid heavy police presence in the area.

Massive protests erupted in the area after the incident with hundreds of agitated people gathering near the university, breaking barricades and clashing with police personnel.

The man, who identified himself as "Rambhakt Gopal", was subsequently overpowered by police and detained. He was taken into custody and was being interrogated, police said.

The entire drama, which triggered panic in the area, was captured by television cameras that showed the man in light coloured pants and a dark jacket, walking away on an empty road barricaded by police, turning around and shouting at the protesters in Hindi, "Here, take this freedom."

The gunman went live on Facebook before the brandishing the gun. Police said they were verifying whether it is his real name.

Before the attack, the man also put out messages on Facebook stating "Shaheen Bhag Khel Khatam" (Run Shaheen, the game is over). Another message stated, "Please wrap me in saffron in my last journey with slogans of Jai Shri Ram". His Facebook profile was deleted after screenshots of his posts were circulated widely on social media platforms.

Several students recapped how their peaceful march on Gandhi's death anniversary became violent.

"We were moving towards the Holy Family Hospital where the police had raised barricades. Suddenly, a gun-wielding man came out and opened fire. One bullet hit my friend's hand," Aamna Asif, a student of economics at the university, told PTI.

She said her friend, Shadab Farooq, a mass communication student, was trying to calm the attacker but he shot at him injuring his left hand.

Farooq, who belongs to Kashmir, was taken to the AIIMS Trauma Centre.

Ragibh Naushad, an LLB student at the university, said, "The Jamia Coordination Committee organised a march to pay homage to Gandhi ji on his death anniversary. It started at 12 noon from Gate number 7, but police denied the permission and stopped the march near the Holy Family hospital.

"A man named Gopal, came there and started brandishing a weapon and later shot a round. He was also chanting pro-CAA slogans."

The incident led to panic in the area.

Khalid Hassan, a JMI alumnus, said initially many were not sure whether it was a gunshot or a tyre burst.

There was heavy police and media presence when the incident took place.

The students were heading from Jamia to Mahatma Gandhi's memorial Rajghat. The march was stopped at the Holy Family Hospital near the university.

Chinmoy Biswal, DCP (southeast), said the students wanted to take out a march from Jamia to Rajghat but were denied permission.

"They were being repeatedly told that the protest should be carried out peacefully. We had barricaded the road just before the Holy Family hospital. Meanwhile, a person was seen in the crowd who waved something which appeared to be a weapon."

"We have detained him and are interrogating him. One person has also been injured," Biswal said.

Feb 17: Chinese authorities on Monday reported a slight upturn in new virus cases and 105 more deaths for a total of 1,770 since the outbreak began two months ago.

The 2,048 new cases followed three days of declines but was up by just 39 cases from the previous day’s figure. Another 10,844 people have recovered from COVID-19, a disease caused by the new coronavirus, and have been discharged from hospitals, according to Monday’s figures.

The update followed the publication late Saturday in China’s official media of a recent speech by President Xi Jinping in which he indicated for the first time that he had led the response to the outbreak from early in the crisis. While the reports were an apparent attempt to demonstrate the Communist Party leadership acted decisively from the start, it also opened Xi up to criticism over why the public was not alerted sooner.

In his speech, Xi said he gave instructions on fighting the virus on Jan. 7 and ordered the shutdown of the most-affected cities that began on Jan. 23.

The disclosure of his speech indicates top leaders knew about the outbreak’s potential severity at least two weeks before such dangers were made known to the public. It was not until late January that officials said the virus can spread between humans and public alarm began to rise.

New cases in other countries are raising growing concerns about containment of the virus.

Taiwan on Sunday reported its first death from COVID-19, the fifth fatality outside of mainland China. Taiwan’s Central News Agency, citing health minister Chen Shih-chung, said the man who died was in his 60s and had not traveled overseas recently and had no known contact with virus patients.

Japanese Prime Minister Shinzo Abe convened an experts meeting to discuss containment measures in his country, where more than a dozen cases have emerged in the past few days without any obvious link to China.

“The situation surrounding this virus is changing by the minute,” Abe said.

Japanese Health Minister Katsunobu Kato said the country is “entering into a phase that is different from before,” requiring new steps to stop the spread of the virus.

Japan now has 413 confirmed cases, including 355 from a quarantined cruise ship, and one death from the virus. Its total is the highest number of cases among about two dozen countries outside of China where the illness has spread.

Hundreds of Americans from the cruise ship took charter flights home, as Japan announced another 70 infections had been confirmed on the Diamond Princess. Canada, Hong Kong and Italy were planning similar flights.

The 300 or so Americans flying on U.S.-government chartered aircraft back to the U.S. will face another 14-day quarantine at Travis Air Force Base in California and Lackland Air Force Base in Texas. The U.S. Embassy said the departure was offered because people on the ship were at a high risk of exposure to the virus. People with symptoms were banned from the flights.

About 255 Canadians and 330 Hong Kong residents are on board the ship or undergoing treatment in Japanese hospitals. There are also 35 Italians, of which 25 are crew members, including the captain.

In China’s Hubei province, where the outbreak began in December, all vehicle traffic will be banned in another containment measure. It expands a vehicle ban in the provincial capital, Wuhan, where public transportation, trains and planes have been halted for weeks.

Exceptions were being made for vehicles involved in epidemic prevention and transporting daily necessities.

Hubei has built new hospitals with thousands of patient beds and China has sent thousands of military medical personnel to staff the new facilities and help the overburdened health care system.

Last Thursday, Hubei changed how it recognized COVID-19 cases, accepting a doctor’s diagnosis rather than waiting for confirmed laboratory test results, in order to treat patients faster. The tally spiked by more than 15,000 cases under the new method.