China says all coronavirus patients in Wuhan have now been discharged

Houston, Mar 15: Researchers, studying the novel coronavirus, have found that the time between cases in a chain of transmission is less than a week, and over 10 per cent of patients are infected by someone who has the virus, but does not show symptoms yet, a finding that may help public health officials contain the pandemic.

The study, published in the journal Emerging Infectious Diseases, estimated what's called the serial interval of the coronavirus by measuring the time it takes for symptoms to appear in two people with the virus -- the person who infects another, and the infected second person.

According to the researchers, including those from the University of Texas at Austin, the average serial interval for the novel coronavirus in China was approximately four days.

They said the speed of an epidemic depends on two things -- how many people each case infects, and how long it takes cases to spread.

The first quantity, the scientists said, is called the reproduction number, and the second is the serial interval.

Due to the short serial interval of the disease caused by the coronavirus -- COVID-19 -- they said, emerging outbreaks will grow quickly, and could be difficult to stop.

“Ebola, with a serial interval of several weeks, is much easier to contain than influenza, with a serial interval of only a few days,” said Lauren Ancel Meyers, study co-author from UT Austin.

Meyers explained that public health responders to Ebola outbreaks have much more time to identify and isolate cases before they infect others.

“The data suggest that this coronavirus may spread like the flu. That means we need to move quickly and aggressively to curb the emerging threat,” Meyers added.

In the study, the scientists examined more than 450 infection case reports from 93 cities in China, and found the strongest evidence yet that people without symptoms must be transmitting the virus -- known as pre-symptomatic transmission.

More than one in ten infections were from people who had the virus but did not yet feel sick, the scientists said.

While researchers across the globe had some uncertainty until now about asymptomatic transmission with the coronavirus, the new evidence could provide guidance to public health officials on how to contain the spread of the disease.

“This provides evidence that extensive control measures including isolation, quarantine, school closures, travel restrictions and cancellation of mass gatherings may be warranted,” Meyers said.

The researchers cautioned that asymptomatic transmission makes containment more difficult.

With hundreds of new cases emerging around the world every day, the scientists said, the data may offer a different picture over time.

They said infection case reports are based on people's memories of where they went and whom they had contact with, and if health officials move quickly to isolate patients, that may also skew the data.

“Our findings are corroborated by instances of silent transmission and rising case counts in hundreds of cities worldwide. This tells us that COVID-19 outbreaks can be elusive and require extreme measures,” Meyers said.

Washington, Jun 12: US President Donald Trump is considering suspending a number of employment visas including the H-1B, most sought-after among Indian IT professionals, in view of the massive unemployment in America due to the coronavirus pandemic, according to a media report.

The proposed suspension could extend into the government’s new fiscal year beginning October 1, when many new visas are issued, The Wall Street Journal reported on Thursday, quoting unnamed administration officials.

“That could bar any new H-1B holder outside the country from coming to work until the suspension is lifted, though visa holders already in the country are unlikely to be affected,” the daily reported.

H-1B is the most coveted foreign work visas for technology professionals from India.

Such a decision by the Trump administration is likely to have an adverse impact on thousands of Indian IT professionals. Already a large number of Indians on the H-1B visas have lost their jobs and are headed back home during the coronavirus pandemic.

The White House, however, said that no final decision has been made and the administration is considering various proposals.

“The administration is currently evaluating a wide range of options, formulated by career experts, to protect American workers and job seekers especially disadvantaged and underserved citizens — but no decisions of any kind have been made,” White House spokesman Hogan Gidley said in a statement.

In addition to the H-1B visas, the suspension could apply to the H-2B visa for short-term seasonal workers, the J-1 visa for short-term workers including camp counselors and au pairs and the L-1 visa for internal company transfers, the financial daily reported.

Meanwhile, the US Chambers of Commerce CEO Thomas Donohue on Thursday wrote a letter to Trump, expressing concern over his reported move on temporary work visas.

“As the economy rebounds, American businesses will need assurances that they can meet all their workforce needs. To that end, it is crucial that they have access to talent both domestically and from around the world,” Donohue wrote in a letter to Trump.

According to The Hill newspaper, Donohue said that American businesses need L-1 visa holders, who have a work visa valid for a relatively short amount of time, for necessary expertise.

He noted the importance of H-1B visa holders, who have a work visa valid for multiple years, for various industries, including technology, accounting and manufacturers, the newspaper said.

“Policies that would, for example, impose wide-ranging bans on the entry of nonimmigrant workers or impose burdensome new regulatory requirements on businesses that employ foreign nationals would undermine that access to talent and in the process, undercut our economy’s ability to grow and create jobs,” Donohue added.

Washington, Jan 15: The historic impeachment trial of US President Donald Trump will begin on Tuesday next week, Mitch McConnell, the leader of the Senate's Republican majority, has announced.

Earlier on Tuesday (January 14), Speaker Nancy Pelosi ended the standoff between the Senate and the Democratic-controlled House of Representatives saying that it would vote on next Tuesday to send the impeachment documents to the upper house so it can hold the trial on charges that Trump obstructed Congress and abused presidential powers.

This will be only the third time in the nation's history that a US president is tried after impeachment and Trump can expect to be acquitted like his two predecessors - Bill Clinton in 1998 and Andrew Johnson in 1868 - because there won't be a two-thirds majority to convict and remove him from office.

McConnel told reporters on Tuesday that preparations like swearing in the Senators as jurors for the trial could begin this week ahead of the formal start on next Tuesday.

"This Impeachment Hoax is an outrage," Trump tweeted, repeating his longstanding complaint about it, when the move to hold the trial finally appeared to gain traction.

"The American people deserve the truth and the Constitution demands a trial," Pelosi said.

She had held on to the Articles of Impeachment - the chargesheet against Trump - that the House voted on December 18 in a bid to pressure McConnell to accept her terms for holding the trial and in an attempt to get some Republican senators to break ranks on procedural matters.

But she has agreed to let the process move forward, without an agreement on the main Democratic demand to call in their witnesses at the trial and to introduce new evidence.

The House Intelligence Committee, which conducted the investigation against the president, on Tuesday released what it said was new evidence from Lev Parnas, a former associate of Trump's personal lawyer Rudy Giuliani. Parnas is facing criminal charges.

Pelosi said that starting the trial without witnesses or documents "a pure political cover-up."

The impeachment process is only an investigation by the House and the framing of the chargesheet for the Senate trial that will be presided over by Chief Justice John Roberts with the Senators as jurors and nominees of the House as prosecutors.

While there is no chance for removal of Trump from office, Democrats see the Senate trial as a propaganda mechanism ahead of the elections in November by giving the charges against Trump another public airing and turning voter opinion against Republican senators facing re-election.

Trump called for an outright dismissal of the impeachment by the Senate, but McConnell said, "There is little or no sentiment in the Republican conference for a motion to dismiss."

He added, "Our members feel that we have an obligation to listen to the arguments."

Trump tweeted that by not dismissing the impeachment out of hand, the Senate trial was giving "credence to a trial based on the no evidence, no crime" and "the partisan Democrat Witch Hunt credibility."

Pelosi had hoped to make some Republican senators break ranks with the leaders on the procedures for the trial and has partially succeeded in this as at least four of them appear open to witnesses being called.

While Trump's conviction and ouster from office is virtually impossible because of the two-thirds vote requirement in the 100-member Senate, only a simple majority is required on procedural matters. The Republicans have 53 members and four of them shifting positions could make a difference here.

McConnell appeared confident that he would have a hold on his party senators to set the rules for the trial.

Whether witnesses would be called to testify is still open as the Republicans have said that it would be decided when the trial starts.

The main sticking point is the Democrats demand to call their witnesses to testify at the trial.

The Democrats did not allow the Republicans to call their own witnesses to testify during the impeachment proceeding in the House and Republicans did not seem inclined to oblige them in the Senate.

Trump tweeted, "'We demand fairness' shouts Pelosi and the Do Nothing Democrats, yet the Dems in the House wouldn't let us have 1 witness, no lawyers or even ask questions."

The charges against Trump stem from a July phone call he had with Ukraine's President Volodymyr Zelensky in which he asked him as a "favour" to investigate former Vice President Joe Biden and his son Hunter.

Democrats say that this was an abuse power and amounted to inviting foreign interference in US elections as Biden is the leading candidate for the Democratic nomination to run against Trump in this year's election.

They also say that he withheld crucial military aid to Ukraine, a US ally against Russia, to pressure Zelensky and this endangered US national security. Trump said he delayed the aid to make sure the new government stomped out corruption.

Hunter Biden, who was made to leave the Navy because of alleged drug use and had no experience in the energy industry or in Ukrainian businesses was appointed a director of a gas company there and received monthly payments of $83,000, according to Republicans.

The former vice president, who was looking after Ukrainians affairs, had a prosecutor looking into gas company removed.

He and the Democrats say that it was because the prosecutor was corrupt, while Republicans see it as a conflict of interest.

The obstruction of Congress resulted from Trump's refusal to provide documents that the House demanded and allow some administration officials to testify at the House hearings.