This clinic is the used car lot of healthcare clinics. They push unneeded immunizations on you using scare tactics like "well, if you don't get it and you are out in the field you may step on something that will cause permanent spinal blah blah blah". Of course you'll be afraid not to get it, even if you were just seen by your healthcare provider of the last 10 yrs (less than a week prior, who administered all needed meds for our trip, except for yellow fever, which was the reason for our appointment at WTH), who told you that you didn't need the booster for another 2 yrs. I firmly believe World Travel Health cares more about your $$$ then your health. Seek other options before you consider this place and definitely see you regular MD prior so you know exactly what you do need and DON'T need. And always check with the CDC before travel so you understand what is required and recommended. I'm not just an unhappy customer, I am a mother who's 19 yr old daughter was given an immunization booster 2 yrs before it was required because a nurse (saleswoman) thought she knew better than our DOCTOR (or maybe she was trying to pay the rent).
There are 199 places in AZ (via cdc website) where you can receive the yellow fever vaccine. Please do yourself a favor and RESEARCH your options.