Hello - I know there have been a ton of posts about the yellow fever vaccination, but none of them recent, so I'm going to post. I'm coming from the U.S. traveling to Northern Tanzania (safari circuit) and to Zanzibar. I just visited the travel doctor and got all my required medicines, prescriptions, etc., except I didn't get the Yellow Fever vaccine. 1. The doctor said technically I don't need it, since I'm not coming from an endemic country, but since the plane is stopping in Nairobi (even though it's only for 40 minutes, and I won't even get off the plane), she has heard of officials asking for proof of it and suggested I should get it just for that reason alone. 2. The Tanzanian Embassy website clearly states that coming from the U.S., I don't need it -http://digitalsquared.com/tzesite1/faqs/ So, my question is, has anyone ever been denied entry or had to get the shot in the airport, even if it was not required? My concern is the symptoms you can get from the shot -> i.e. from fever to organ failure and death.