Leading doctor urges wealthy countries to wake up as there is no treatment or vaccine

The Brazilian doctor who first linked the Zika virus to brain damage in babies has warned that rich countries are not safe from the disease, urging them to increase research funding.

Obstetrician Adriana Melo was the first person to make the connection between an outbreak of Zika in Brazil and a surge in babies born with microcephaly, or abnormally small heads.