If you are traveling to Senegal, you must have a yellow fever certificate to show the authorities on arrival.
The yellow fever certificate for Senegal can only be obtained if you have received the immunization for yellow fever.
You can do this at a travel health clinic or hospital in your home country before you travel.
It is advisable to get the yellow fever immunization at least six weeks prior to travelling to Senegal so that it has time to take effect before you go.
When you arrive in the country, you will be asked to show your yellow fever certificate in Senegal airports and other ports of entry before you are allowed entry.