Zika virus spreads from South America to doorstep of Africa

The Zika virus that is believed to have infected more than 7,500 people in an island nation off the western coast of Africa is the same strain spreading through the Americas, the World Health Organisation has said.

As a result, three babies in Cape Verde have already developed microcephaly - the same devastating condition that has left babies in Brazil and elsewhere with undersized brains and skulls.