You know it, I know it, they know it: Trump on China's Covid-19 death toll

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.

Beijing, May 24: The Chinese virology institute in the city where COVID-19 first emerged has three live strains of bat coronavirus on-site, but none match the new contagion wreaking chaos across the world, its director has said.

Scientists think COVID-19 -- which first emerged in Wuhan and has killed some 340,000 people worldwide -- originated in bats and could have been transmitted to people via another mammal.

But the director of the Wuhan Institute of Virology told state broadcaster CGTN that claims made by US President Donald Trump and others that the virus could have leaked from the facility were "pure fabrication".

"Now we have three strains of live viruses... But their highest similarity to SARS-CoV-2 only reaches 79.8 percent," she said, referring to the coronavirus strain that causes COVID-19.

US demands immediate start to WHO review

The United States called on the World Health Organisation on Friday to begin working immediately on investigating the source of the novel coronavirus, as well as its handling of the response to the pandemic.

One of their research teams, led by Professor Shi Zhengli, has been researching bat coronaviruses since 2004 and focused on the "source tracing of SARS", the strain behind another virus outbreak nearly two decades ago.

"We know that the whole genome of SARS-CoV-2 is only 80 percent similar to that of SARS. It's an obvious difference," she said.

"So, in Professor Shi's past research, they didn't pay attention to such viruses which are less similar to the SARS virus."

Conspiracy rumours that the biosafety lab was involved in the outbreak swirled online for months before Trump and US Secretary of State Mike Pompeo brought the theory into the mainstream by claiming that there is evidence the pathogen came from the institute.

The lab has said it received samples of the then-unknown virus on December 30, determined the viral genome sequence on January 2 and submitted information on the pathogen to the WHO on January 11.

Wang said in the interview that before it received samples in December, their team had never "encountered, researched or kept the virus."

"In fact, like everyone else, we didn't even know the virus existed," she said. "How could it have leaked from our lab when we never had it?"

The World Health Organization said Washington had offered no evidence to support the "speculative" claims.

In an interview with Scientific American, Shi said the SARS-CoV-2 genome sequence did not match any of the bat coronaviruses her laboratory had previously collected and studied.

Washington, Jun 24: An Indian restaurant in the Sante Fe City of New Mexico, owned by a Sikh, was broken into and vandalised with hate messages scrawled on its walls, a media report said Tuesday.

The damage caused to India Palace restaurant is estimated to be worth USD 100,000, local Santa Fe Reporter said adding that the vandalisation is being investigated by local police and the FBI.

Sikh American Legal Defense and Education Fund (SALDEF) has condemned the incident.

"This kind of hate and violence is unacceptable and swift action must be taken to ensure the safety and security of all Americans," said Kiran Kaur Gill SALDEF executive director.

According to the local daily, tables were overturned, glassware was smashed into piles on the floor, wine racks were emptied, a statue of a goddess was beheaded and computers were stolen.

The vandals also turned over and destroyed food warmers while the front desk area was devastated, plates smashed and the kitchen rendered completely unusable, it said.

"I walked into the kitchen, I saw everything and I was like, hold on, what? What is going on here?" owner Baljit Singh told Santa Fe Reporter. "White power," "Trump 2020," "go home," and far worse were spray-painted on walls, doors, counters and any other available surface.

"Some phrases contained threats of violence and derogatory racial slurs," the daily said.

"Santa Fe is a peaceful town, and the Sikh community has lived here, beautifully integrated, since the 60s," said SALDEF board member Simran Singh, who lives minutes away from the restaurant.

"Tensions have flared recently with the reinvigoration of the Black Lives Matter movement and the removal of statues associated with Spanish colonisers of this area, who committed a number of atrocities," he said.

"Nevertheless, we are seeing an outpouring of love and support around the city and in my experience, our neighbors love and appreciate us, as we love and appreciate them," he added.

SALDEF said that it has seen an unprecedented rise in hate crimes including the April 29 incident wherein a Sikh American Lakhwant Singh was brutally attacked by a man identified as Eric Breeman in Lakewood, Colorado.

Lakhwant Singh was told to "go back to your country," while being attacked. No formal hate crime charges have been brought against the attacker.