Zika fears in the US
Media playback is unsupported on your device
Video

Zika fears in the US as summer arrives

As warmer weather begins across a wider swathe of the United States, scientists are all but certain of locally transmitted Zika outbreaks in the country.

Scientists say efforts to develop a vaccine need more money - but the fight for additional funding is just beginning.

Gary O'Donoghue reports.

More: The Zika virus and Microcephaly

Go to next video: Zika 'more dangerous than thought'