Scientists say Zika can be spread through sex

As the devastating Zika virus rampages through
the Caribbean and Latin America - and threatens
to hit parts of the US such as Florida - more and
more questions are being asked about how it can
be transmitted.
The virus has been linked to birth defects in
thousands of Brazilian babies, born with heads
smaller than normal and undeveloped brains.
Symptoms include a rash, fever, conjunctivitis and
headache and to date, 21 countries have been
affected.
At the moment, there is clear scientific evidence
the virus is transmitted by the same type of
mosquito that spreads other tropical diseases,
such as dengue fever, chikungunya and yellow
fever.
But there are also fears the virus may be passed
on through sex, following two reports in medical
literature.
One states that Zika was found in the semen of a
man from Tahiti, the other that the virus was
passed from a husband to his wife after
intercourse.
But is there really a risk?
In a statement issued this week, the World Health
Organisation said there was still insufficient
evidence to make the link.
But these research papers argue otherwise.