Two Zika cases confirmed in Australia

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image captionA World Health Organization alert puts Zika in the same category of concern as Ebola

Two Sydney residents who recently returned from the Caribbean have been diagnosed with the Zika virus, Australian health officials say.

The man and woman are known to each other and tested positive last Friday, New South Wales Health told the BBC.

The World Health Organization has declared Zika a global health emergency as it spreads through the Americas.

Zika is carried by mosquitoes and has been linked to thousands of suspected cases of underdeveloped brains.

media captionA new testing kit is being developed to identify infections quickly

NSW authorities said one traveller tested positive to Zika last year after a trip to the Solomon Islands, and four people tested positive after returning from the Cook Islands in 2014.

Meanwhile, Australian Daniel Gaunt, 27, who contracted the virus after being bitten by a monkey and mosquitoes on the holiday island of Bali in 2013 yesterday urged travellers to "take all the precautions".