A rare case of the Zika virus being transmitted through sex, not a mosquito bite, has been reported in the US.
According to the Centers for Disease Control A patient infected in Dallas, Texas, is likely to have been infected by sexual contact.
Two cases of the virus have also been confirmed in Australia. Officials said the two Sydney residents had recently returned from the Caribbean.
Zika is carried by mosquitoes and has been linked to thousands of babies being born with underdeveloped brains.
It is spreading through the Americas and the World Health Organization has declared the virus a global public health emergency.