Trump administration to propose changes in H-1B visas

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."

Washington, Apr 20: The US wants to send a team of experts to China to investigate coronavirus, President Donald Trump has said, a day after he warned Beijing of "consequences" if it was knowingly responsible for the spread of COVID-19 which has killed more than 165,000 people globally, including over 41,000 in America.

Describing the coronavirus as a plague, Trump, during his White House news conference on Sunday, said that he is not happy with China where the pandemic emerged in December last year in the central Chinese city of Wuhan.

“We spoke to them (Chinese) a long time ago about going in. We want to go in. We want to see what's going on. And we weren't exactly invited, I can tell you that,” the President told reporters.

“I was very happy with the (trade) deal (with China), very happy with everything and then we found out about the plague and since we found out about that I'm not happy,” he said.

The US has launched an investigation into whether the deadly virus "escaped" from the Wuhan Institute of Virology.

He has repeatedly expressed disappointment over China's handling of the coronavirus disease, alleged non-transparency and initial non-cooperation from Beijing with Washington on dealing with the crisis.

“Based on an investigation, we are going to find out,” Trump told reporters.

A day earlier, he warned China that it should face consequences if it was "knowingly responsible" for the spread of the novel coronavirus, upping the ante on Beijing over its handling of the COVID-19 pandemic.

“If they (China) were knowingly responsible… then there should be consequences. You're talking about, you know, potentially lives like nobody's seen since 1917,” Trump said on Saturday.

The opposition Democratic Party said that Trump has falsely claimed he acted early by restricting travel from China when it was little too late and he continued to downplay the virus throughout February.

The number of COVID-19 deaths in the US crossed 41,000 and the total infections were more than 764,000 so far.

New York, the epicentre of the deadly COVID-19 in the US, has 2,42,000 cases and over 17,600 fatalities so far. It has registered a 50-percent decline in new cases over an eight-day period.

The novel virus, which emerged in China in December last year, has killed over 160,000 and infected more than 2.3 million people worldwide.

Washington, Apr 2: The total US death toll from the coronavirus pandemic topped 4,000 early Wednesday, more than double the number from three days earlier, according to a tally by Johns Hopkins University.

The number of deaths was 4,076 -- more than twice the 2,010 recorded late Saturday.

More than 40 percent of recorded deaths nationally were in New York state, the Johns Hopkins data showed.

On Tuesday the United States exceeded the number of deaths in China, where the pandemic emerged in December before spreading worldwide.

The number of confirmed US cases has reached 189,510, the most in the world, though Italy and Spain have recorded more fatalities.

After initially downplaying the threat from new coronavirus in the early stages of the US outbreak, President Donald Trump warned of "a very, very painful two weeks" to come for the country on Tuesday.