So. I'm heading to Colombia then Guatemala in January--specifically traveling from Bogota to Santa Marta/Tayrona National Park in Colombia and Guatemala City to Santiago in Gautemala. Has anyone traveled or lived in these places? Any good advise for a first timer? Also, I recently got the required Yellow Fever vaccination, and they recommended (but not required) I get Hepatitis A and Typhoid vaccinations. What are my odds of coming in contact with these diseases? If possible, I'd rather bypass the other vaccinations--they are expensive and the Yellow Fever one made me quite sick.