My husband and I are going to kenya in october for 18 days. We've never needed or been recommended a yellow fever vaccination before. The nurse however recommended we have one this time. I have one from 2011 but my husband can't have one. We haven't really worried about it but I did see in a government advice that it is recommended to have one for the areas were going to, which are Nairobi, Masai Mara, Amboseli and Tsavo East/West. Much appriciated if anyone has any input on this.