[QODLink]
Asia-Pacific

Fatal new bird flu strain worries scientists

A new bird flu virus has jumped from birds to humans, as a regional ban on chicken sales continue.

Last updated: 05 Feb 2014 10:06
Email Article
Print Article
Share article
Send Feedback
Workers place dead chickens into plastic bags on January 28, 2014 in Hong Kong. Scientists have identified a new bird flu strain in China. [Getty Images]

A new strain of the bird flu virus has proven fatal for the first time after it jumped from birds to humans and is worrying scientists. 

The latest strain, previously unknown in humans, called H10N8, killed a 73-year-old Chinese woman in December and Chinese authorities last week confirmed a second human case of the new strain of a second woman, who remains critically ill in a hospital.

"We should be especially worried when those viruses show characteristics that suggest they have the capacity to replicate easily or to be virulent or resistant to drugs. This virus ticks several of these boxes and therefore is a cause for concern," said Jeremy Farrar, director of Wellcome Trust and an expert on flu. 

Another new strain of bird flu, H7N9, has already infected at least 286 people in China, Taiwan and Hong Kong, killing around 60 of them.

Worrying new strain

Chinese scientists writing in The Lancet medical journal, who conducted a genetic analysis on samples of the H10N8 virus from the woman who died, said it was a new genetic reassortment of other strains of bird flu viruses, including one called H9N2 that is relatively well known in poultry in China. 

Somewhat worryingly, the virus like H7N9 has also evolved "some genetic characteristics that may allow it to replicate efficiently in humans", said Yuelong Shu of the Chinese Center for Disease Control and Prevention in Beijing. 

According to the scientists' study of her case, the 73-year-old victim, from Nanchang City in eastern China, was admitted to hospital with fever and severe pneumonia on November 30, 2013. Despite being treated with antibiotic and antivirals, she deteriorated rapidly, developed multiple organ failure and died nine days after her symptoms first started.

The source of the infection remains unknown.

Mingbin Liu from Nanchang City Center for Disease Control and Prevention added that the emergence of a second human case of H10N8 in a 55-year-old woman reveals that the newly discovered strain has circulated and could cause more infection. 

"It's still an early stage to know whether this virus is going to cause a major threat," Dr. Ben Cowling, Division Head and Associate Professor at the School of Public Health in the University of Hong Kong, told Al Jazeera.

He said that Chinese officials have been very open about their investigation and are putting "a lot of effort into controlling the strain in humans."

Ban on poultry sales

Authorities in eastern China announced a ban last Tuesday on live poultry sales following a spike in the number of people infected with the H7N9 strain of bird flu during the busy Chinese New Year travel period, while Hong Kong began culling 20,000 chickens.

So far this year, that virus has killed 20 people in China out of 96 known infections, according to the official Xinhua News Agency. The deaths were in eastern Shanghai, neighbouring Zhejiang province and southern Guangdong province.

The H7N9 bird flu virus emerged in March last year and has so far infected at least 240 people in China, Taiwan and Hong Kong, according to the Hong Kong Department of Health. 

China's official Xinhua news agency, citing the Chinese Centre for Disease Control and Prevention, said 19 people had died of the flu in China this year.

516

Source:
Al Jazeera and agencies
Email Article
Print Article
Share article
Send Feedback
Topics in this article
People
Country
City
Organisation
Featured on Al Jazeera
Muslim volunteers face questioning and threat of arrest, while aid has been disrupted or blocked, charities say.
Six months on, outrage and sorrow over the mass schoolgirl abduction has disappeared - except for families in Nigeria.
ISIL combatants seeking an 'exit strategy' from Mideast conflict need positive reinforcement back home, analysts say.
European nation hit by a wave of Islamophobia as many young fighters join ISIL in Syria and Iraq.
Featured
Lack of child protection laws means abandoned and orphaned kids rely heavily on the care of strangers.
At least 25 tax collectors have been killed since 2012 in Mogadishu, a city awash in weapons and abject poverty.
Since she was 16-years-old, Scottish Nationalist Party's Sturgeon has strove for independence from the UK.
Armed group's ransom success with German hostages marks a re-emergence, as authorities investigate ISIL links.
Western nations are moving into the resource-rich country after decades of disinterest, challenging China's interests.