Zika outbreak: 200,000 troops deployed
More than 200,000 troops will be deployed on the streets of Brazil in a bid to contain the Zika virus.
Authorities there say they are currently investigating almost 4,000 reports of birth defects in babies - which could be linked to the virus.
The World Health Organisation says it will be at least 18 months before a vaccine is developed.
South America correspondent Wyre Davies reports.