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London, Jun 19: Malala Yousafzai, the youngest Nobel Peace Prize winner who once took a bullet for campaigning for girls' education in Pakistan, was over the moon on Friday after completing her degree in Philosophy, Politics and Economics at Britain's prestigious Oxford University.

Malala, 22, who attended Oxford's Lady Margaret Hall college, took to Twitter to share two pictures that show her celebrating the milestone with her family.

"Hard to express my joy and gratitude right now as I completed my Philosophy, Politics and Economics degree at Oxford," she said in the tweet, accompanied by two pictures - one showing her sitting with her family in front of a cake that says: 'Happy Graduation Malala', and the other in which she is covered with cake smiling for the camera.

Hard to express my joy and gratitude right now as I completed my Philosophy, Politics and Economics degree at Oxford. I don’t know what’s ahead. For now, it will be Netflix, reading and sleep. pic.twitter.com/AUxN55cUAf

— Malala (@Malala) June 19, 2020

In the tweet, the famed human rights activist also revealed her plans for the immediate future - Netflix, reading and sleeping.

"I don't know what's ahead. For now, it will be Netflix, reading and sleep," she wrote.

Malala was shot in the head by the Taliban militants in December 2012 for campaigning for female education in the Swat Valley in northeastern Pakistan.

Severely wounded, she was airlifted from one military hospital in Pakistan to another and later flown to the UK for treatment.

After the attack, the Taliban released a statement saying that they would target Malala again if she survived.

At the age of 17, Malala became the youngest recipient of the Nobel Peace Prize for her education advocacy in 2014 when she shared the coveted honour with India's social activist Kailash Satyarthi.

Unable to return to Pakistan after her recovery, she moved to Britain, setting up the Malala Fund and supporting local education advocacy groups with a focus on Pakistan, Nigeria, Jordan, Syria and Kenya.

The Taliban, who are against girls' education, have destroyed many schools in Pakistan.

Washington, May 20: The United States recorded another 1,536 coronavirus deaths over the past 24 hours, the Johns Hopkins University tracker said.

That figure, tallied as of 8:30 pm (0030 GMT), raises to 91,845 the total number of COVID-19 deaths in the US.

The US tops the global rankings both for the highest death toll and the highest number of infections, with more than 1.5 million cases.

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.