Hi, not sure if this is the right forum to ask. I'm thinking of spending a few weeks in Zanzibar Tanzania and I'm trying to find out whether I need to have proof of yellow fever vaccination or not. I've looked at the WHO site, everybody is referring to, and it seems that there is no need of YF vax proof to enter Tanzania but it's not clear to me what happens when I get back to bkk. Asked the airliner and said to ask the embassy which is always a drama to get in touch with and get info from. Maybe a long shot I know but I wonder if anyone in here had some info on the matter or knows a quick way to find out for sure. Thanks