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WHO concerned about bird flu after girl's father tests positive |

Health And Family

WHO concerned about bird flu after girl's father tests positive

Daniel Lawler - Agence France-Presse
WHO concerned about bird flu after girl's father tests positive
A worker weighs chickens at a market in Phnom Penh on Feb. 24, 2023. The father of an 11-year-old Cambodian girl who died earlier in the week from bird flu tested positive for the virus, health officials said.
AFP / Tang Chhin Sothy

PARIS, France — The World Health Organization expressed concern about bird flu on Friday after the father of a 11-year-old Cambodian girl who died from the disease also tested positive, raising fears of human-to-human transmission.

Since late 2021, one of the worst global avian influenza outbreaks on record has seen tens of millions of poultry culled, mass wild bird die-offs and a rising number of infections among mammals.

In Cambodia, the girl fell ill on February 16 with a fever, cough and sore throat, and died on Wednesday from the H5N1 bird flu virus, according to the health ministry.

Authorities then collected samples from 12 people who had been in contact with her.

On Friday, the authorities said the girl's 49-year-old father had tested positive, adding that he was asymptomatic.

The WHO said it was in close contact with the Cambodian authorities about the situation, including regarding the test results of the girl's other contacts.

Humans rarely get bird flu, but when they do it is usually from coming in direct contact with infected birds.

Investigators in Cambodia are working to establish whether the girl and father were exposed to infected birds.

Officials are also waiting for test results from several dead wild birds found near the girl's remote village in the eastern Prey Veng province.


"So far, it is too early to know if it's human-to-human transmission or exposure to the same environmental conditions," Sylvie Briand, WHO epidemic and pandemic preparedness and prevention director, told a virtual press conference.

Earlier this month, WHO chief Tedros Adhanom Ghebreyesus said the risk of bird flu to humans was low, and Briand emphasised that this assessment had not changed.

But she added that the UN agency was reviewing the available information to see if this risk assessment needs to be updated.

"The global H5N1 situation is worrying given the wide spread of the virus in birds around the world, and the increasing reports of cases in mammals including humans," Briand said.

"WHO takes the risk from this virus seriously and urges heightened vigilance from all countries," she added.

So far, cases of bird flu in humans had been "sporadic", Briand said.

"But when you see that there are a number of potential cases surrounding this initial case, you always wonder what has happened: is it because maybe the initial case has transmitted the disease to other humans?

"So, we are really concerned about the potential human-to-human transmission coming from this initial spillover from animals."

Vaccine call

If bird flu transmission is confirmed to have taken place between humans, the WHO said a series of measures could be put in place fairly quickly.

For example, there are nearly 20 H5 bird flu vaccines licensed for pandemic use, the WHO said.

But Richard Webby, head of the WHO's centre for studying influenza in animals, estimated it could take five or six months to update and produce such a vaccine for the currently circulating strain of H5N1.

Earlier this week the WHO's incoming chief scientist Jeremy Farrar called on governments around the world to invest in H5N1 vaccines in preparation for a potential outbreak in humans.

Letting the virus spread widely among birds and mammals was the perfect way to "create something nasty", said Farrar, according to the BMJ journal.

Tom Peacock, a virologist at the Imperial College London, told AFP that every "avian influenza human infection is worrying" because that is how "any hypothetical pandemic would have to be sparked.

"The fact this has been identified quite quickly maybe means this exact case is unlikely to get much further, but for every case like this it's likely many more go undetected," he added.

Over the last two decades, there have been nearly 900 confirmed H5N1 cases in humans with more than 450 deaths, according to the WHO.

A nine-year-old girl in Ecuador who contracted bird flu last month has "recovered and is out of the hospital" and is on antiviral medication, Briand said.

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