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You may not be showing these symptoms - headache, a high temperature, nausea and vomiting, jaundice, and bleeding, but that's the reason why you should be vaccinated today against the risk of the mosquito-borne Yellow Fever disease.
The good news is, this morning the World Health Organisation begins the largest ever vaccination campaign in vulnerable West Africa.
People in Benin, Liberia and Sierra Leone will at the same time today be vaccinated to kick off the project which later spreads out to other countries in the sub region.
Dr Rosamund Lewis is the project leader for the WHO's yellow fever initiative.
Ahead of this morning's vaccination campaign Akwasi Sarpong asked her how yellow fever is transmitted.
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