Zika virus infection 'through sex' reported

TEXAS - A rare case of the Zika virus being transmitted through sex, not a mosquito bite, has been reported in the US.

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.

If Zika can readily spread through sex, then it poses a risk to every country not just those with the Aedes mosquito.

So far, authorities have said sexual transmission is rare, but last year they would have said any case of Zika was rare, too.

This explosive outbreak has caught the world by surprise and many key questions remain unanswered.

Exactly how common or rare is sexual transmission? Can it be spread by the 80% of people who show no symptoms? How long does the virus persist in semen? When is it safe to have sex again?

What should men do after visiting affected countries? Can women also spread the virus through sex?

However, this is not a new HIV/Aids moment. HIV infection is incurable and dramatically shortens lives without daily medication.

Zika infections are short, mild and pose a significant threat only in pregnancy.

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