Crossing by land from Senegal at Diama border

I'm not sure if this specific matter is entirely relevant to the forum, but I was wondering if anyone reading this has crossed into Mauritania from Senegal at Diama border or knows somebody who has — I would like to know if a Yellow Fever vaccine certificate is needed to cross the border as I will be doing so this month and would like to avoid taking this vaccine if possible.

Thank you

Zylen