ECDC has published a rapid risk assessment: Outbreak of yellow fever in Brazil - first update 13 April 2017. Click or tap through to download the PDF. The abstract:
Brazil has been experiencing a yellow fever outbreak since January 2017 and WHO has recently updated vaccination requirements and recommendations for international travellers accordingly. This risk assessment contains updated advice to travellers and health professionals and the latest information on the epidemiological situation in Brazil, with details of the States affected and the measures being taken.