Kabul: Gunmen kill 14 in attack on Shiites marking Ashura

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.

New Delhi, Apr 14: The World Health Organization on Tuesday lauded "India's tough and timely actions" against the coronavirus spread as Prime Minister Narendra Modi announced the extension of current lockdown till May 3.

"It may be early to talk about results in numbers, but a six-week nationwide lockdown to facilitate effective physical distancing, coupled with the expansion of core public health measures such as detection, isolation and tracing contact of coronavirus positive people, would go a long way in arresting the virus spread," said WHO's South-East Asia Regional Director, Dr Poonam Khetrapal Singh.

"Despite huge and multiple challenges, India has been demonstrating unwavering commitment in its fight against the pandemic," she said.

"In these testing times, the action lies as much with the communities as with the authorities and the health workforce," she added.

"It is indeed time for each and every one to contribute their best and together to beat the virus," Dr Singh said.

Modi on Tuesday said the implementation of the lockdown will be strictly ensured in coming days to ensure that the virus does not spread to new areas

The prime minister said a detailed guideline on the implementation of the new lockdown will be announced on Wednesday.

According the Union Health Ministry figures, a total of 339 people have died of COVIOD-19 till date in the country, while the number of infected cases has soared to 10,363 on Tuesday.

A PTI tally of figures reported by various states as on Monday evening, however, showed at least 346 deaths.

There has been a lag in the Union Health Ministry figures, compared to the number of deaths announced by different states, which officials attribute to procedural delays in assigning the cases to individual states.

The Cambridge Analytica scandal is far from over. New explosive details leaked by a whistleblower shows that the extent of the rot is far deeper than previously thought.

An anonymous Twitter account, @HindsightFiles, has started releasing the documents, apparently on behalf of Brittany Kaiser, a former employee of the now defunct British data analytics and consulting company Cambridge Analytica.

"Democracies around the world are being auctioned to the highest bidder. We release the documents that explain how," reads the biography of the @HindsightFiles.

The document will reveal previously unreleased emails, project plans, case studies, negotiations and more spanning over 60 countries.

"Over the past two years I have given evidence to investigators, journalists and academics to analyse what happened at Cambridge Analytica, and how our data was used to influence democracies around the world. In the name of shedding light on these dark practices, I am releasing documents and emails in full for the public good," Kaiser, who worked with Cambridge Analytica from 2014 to 208, was quoted as saying.

"I do this to strengthen the case for data rights and enforcement of our electoral laws online globally. We should all be seeking more ethical digital future for ourselves and our children," added Kaiser who starred in the Oscar-shortlisted Netflix documentary "The Great Hack".

The details released so far includes links to material on the firm's activities in Malaysia, Kenya, Brazil and Iran, an addition to the John Bolton archive.

Over the next months, more than 100,000 documents relating to work in 68 countries are set to be released, according to a report in The Guardian.

More than one and a half year after the Cambridge Analytica scandal first became public, US regulators last month said that the now-defunct British data analytics and consulting company engaged in deceptive practices to harvest personal information from tens of millions of Facebook users for voter profiling and targeting.

According to Kaiser, the Facebook data scandal was part of a much bigger global operation designed to manipulate people in collaboration with governments, intelligence agencies, commercial companies and political campaigns.

The unpublished documents contain material that suggests the firm collaborated with a political party in Ukraine in 2017 even while under investigation as part of Robert Mueller's investigation into Russian interference in the 2016 US presidential election, said The Guardian report.

"There are emails between these major Trump donors discussing ways of obscuring the source of their donations through a series of different financial vehicles. These documents expose the entire dark money machinery behind US politics," Kaiser was quoted as saying.

Similar tactics were deployed in other countries that Cambridge Analytica operated in, including Britain, she claimed.

The files released by Kaiser suggest that Cambridge Analytica offered to help United Malays National Organisation (Umno), the party of Malaysia's Former Prime Minister Najib Razak, to influence the voting of 40 parliamentary constituencies in the 14th General Election (GE14) in 2013.

Umno, according to the leaks, requested the company to prepare a proposal to regain 13 seats, The South China Morning Post reported on Saturday.

In 2018, Razak claimed that he had never engaged Cambridge Analytica in any way.