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WHO declares Zika outbreak a global health emergency

© Marvin Recinos, AFP | An Aedes Aegypti mosquito is photographed in a San Salvador laboratory on January 27, 2016. Health authorities have issued a national alert against the Aedes aegypti mosquito, vector of the Zika virus.

Text by FRANCE 24

Latest update : 2016-02-01

The World Health Organization declared an international emergency on Monday over the explosive spread of the mosquito-borne Zika virus, which is linked to birth defects in the Americas, saying it is an "extraordinary event."

The UN health agency convened an emergency meeting of independent experts in Geneva to assess the outbreak after noting a suspicious link between Zika's arrival in Brazil last year and a surge in the number of babies born with abnormally small heads.

"After a review of the evidence, the committee advised that the clusters of microcephaly and other neurological complications constitute an extraordinary event and public health threat to other parts of the world," WHO Director-General Margaret Chan said.

Declaring a global emergency is akin to an international SOS signal and usually brings more money and action to address an outbreak. The last such emergency was announced over the 2014 devastating Ebola outbreak in West Africa which killed 11,000 people; polio was declared a similar emergency the year before.

WHO estimates there could be up to 4 million cases of Zika in the Americas in the next year, but no recommendations were made to restrict travel or trade.

No vaccine

There is no vaccine or treatment for Zika, which is a close cousin of dengue and chikungunya and causes mild fever, rash and red eyes. An estimated 80 percent of people infected have no symptoms, making it difficult for pregnant women to know whether they have been infected.

"It is important to understand, there are several measures pregnant women can take," Chan said. "If you can delay travel and it does not affect your other family commitments, it is something they can consider.

"If they need to travel, they can get advice from their physician and take personal protective measures, like wearing long sleeves and shirts and pants and use mosquito repellent."

WHO officials say it could be six to nine months before science proves or disproves any connection between Zika and the spike in the number of babies born in Brazil with abnormally small heads.

WHO, which was widely criticised for its slow response to the 2014 Ebola crisis in West Africa, has been eager to show its responsiveness this time. Despite dire warnings that Ebola was out of control in mid-2014, WHO didn't declare an emergency until August, when nearly 1,000 people had died.

Zika was first identified in 1947 in a Ugandan forest but until last year, it wasn't believed to cause any serious effects; about 80 percent of infected people never experience symptoms. The virus has also been linked to Guillain-Barre syndrome, which causes muscle weakness and nerve problems.

WHO learnt from past mistakes

"Of course, the world and the World Health Organization have all learned from the Ebola crisis," WHO spokesman Christian Lindmeier said earlier Monday before the emergency was declared. "That's why we are trying to bring in the best experts we can gather for this event, to try to establish what steps to take and what the way forward should be."

Lindmeier credited authorities in Brazil for being "extremely transparent" since the Zika outbreak turned up there in May. He said WHO first raised the possible connection between the virus and abnormally small heads back in October - a prospect that has sown fear among many would-be mothers and pregnant women.

Brazilian officials shared lab samples with foreign experts and brought in scientists from abroad, he said.

"What we know so far is that the only microcephaly cases we see currently are from Brazil," Lindmeier said, noting that abnormally small heads in newborns can have many causes - such as the effects of herbicides, alcohol use, or drugs and toxins. "This is exactly what is the concerning question: why do we see this in Brazil?"

Jimmy Whitworth, an infectious diseases expert at the London School of Hygiene and Tropical Medicine, said we might soon see other babies born with malformed heads as the virus becomes entrenched in other countries.

"It could be that we're getting the strongest signal in Brazil," he said before WHO's annoucement. "But having these cases occurring and pinning it to Zika is tough."

Whitworth said it was important for WHO to act quickly, despite definitive evidence that Zika is responsible for the surge in microcephaly cases.

"For situations like this, you have to essentially have a 'no regrets' policy," he said. "Maybe this will be a false alarm when more information is available months later, but it's serious enough on the evidence we have right now that we have to act."

(FRANCE 24 with AP)

 

 

Date created : 2016-02-01

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