In the 19th century, yellow fever had taken hold of parts of Europe and the USA, especially the Deep South, killing thousands. Now mostly in Africa and South America, this mosquito-borne disease could spread at any moment, threatening public health and economic security worldwide.
The Ghanaian Ministry of Health and the Ghana Health Service, with support from UNICEF, WHO, Gavi and partners, undertook a preventive mass yellow fever vaccination campaign from 12–18 November.
We already know that climate change could lead to yellow fever potentially spreading to new habitats in Europe and the USA. But now new research suggests that it may also increase in intensity across Africa, putting many thousands more people at risk.