Syria-bound Russian military jet crashes with 92 onboard

Bueno Aires, Apr 25: Dozens of prisoners at a jail in Argentina's capital Buenos Aires rioted on Friday demanding urgent health measures after confirmation of a coronavirus case inside the facility.

Police surrounded the prison, which holds around 2,200 inmates, as explosions were heard, news agency reporters at the scene said.

A group of prisoners managed to climb onto a roof, burn mattresses and throw objects at security guards trying to quell the uprising.

Authorities have yet to comment on the riot or whether there are any injuries.

Inmates could be heard shouting demands for a judge to hear their case and for better protection against the pandemic, just a few days after a warden at the Villa Devoto prison was confirmed to have contracted the novel coronavirus.

"COVID-19 in Devoto, genocidal judges," read a banner hung from the prison roof. "We refuse to die in prison," read another.

The inmates are demanding, among other things, that releases that were pending before the pandemic be processed.

Several other riots broke out in prisons last week, including in Florencio Varela in Buenos Aires province where one inmate died and 20 were injured.

Argentina has been in lockdown since March 20 and has recorded more than 3,400 coronavirus cases and 167 deaths.

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."

Geneva, May 28: The global death toll from the novel coronavirus has risen over the past 24 hours by 5,581 to 349,095, the World Health Organization (WHO) said in its daily situation report.

The number of confirmed cases has increased by 84,314 to 5,488,825, the WHO said.

Most cases of infection are recorded in the Americas (North and South America) - 2,495,924, with 145,810 deaths. While Europe has reported 2,061,828 cases and 1,76,226 deaths so far.

As per WHO tally, the US has the highest number of cases in the world with 1,63,4010 infections.

The global health body declared the outbreak of the new coronavirus a pandemic on March 11.