A rare case of the Zika virus being transmitted through sex, not a mosquito bite, has been reported in the United States.
A patient infected in Dallas, Texas, is likely to have been infected by sexual contact, the Centers for Disease Control (CDC) told the BBC.
The person had not travelled to infected areas but their partner had returned from Venezuela.
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 (WHO) has declared the disease linked to the virus a global public health emergency.
The “self-deferral” should apply to people returning from Mexico, the Caribbean or Central or South America during the past four weeks, the Red Cross said in a statement.
Two cases of the Zika virus have been confirmed in Australia. Officials said the two Sydney residents had recently returned from the Caribbean.
Zika has also been found in two unrelated cases in the Republic of Ireland, officials there said. A man and an older woman, who have both recovered, had a history of travelling to a Zika-affected country.
Meanwhile, Brazil – the country worst hit by the outbreak – has revealed it is investigating 3,670 suspected cases of microcephaly in babies linked to the Zika virus.
