The FDA approved the first human trials of a Zika vaccine.

The US Food and Drug Administration (FDA) has approved the first human tests of an experimental Zika virus vaccine, the makers of the drug announced on Monday.

Called GLS–5700, the medication will be used in a clinical trial involving 40 healthy people, and represents the first major step towards ultimately immunising people against Zika – which was declared a global public health emergency by the World Health Organisation (WHO) in February.