Yesterday the nurse at Kaiser called me back and told me all the immunizations I would need for the trip (which is less than 8 weeks away now). Here's the breakdown:
Yellow fever- required to enter some countries
Hepatitis B- can get 2 injections (out of 3 in the series)
Plus, we need to bring a shit ton of anti-diarrhea medication along (no pun intended). FUN!
Still, it will all be worth it when we're standing on our balcony overlooking Buenos Aires.