It's important that you have a travel medicine consult before visiting Peru.  There are several immunizations that you would need for travel to that region such as yellow fever, typhoid and hepatitis A vaccines, in addition to making sure that you are up to date on routine immunizations such as hepatitis B and tetanus. 

For an itinerary that includes the Amazon basin, you will need medicine to prevent malaria.  Antibiotics to take with you in case of severe traveler's diarrhea are also advisable. 

At a travel medicine consult, any pre-existing health issues that you have would be discussed as well as preventive measures to avoid food and water-borne and insect-related diseases.

We may be close to booked up in our travel clinic at the WWU student health center for this quarter, but you can try making an appointment at 650-3400.  There are other clinics that cover travel medicine in Whatcom county and elsewhere.  Try Googling "travel clinics" and "Whatcom" or whatever county would be convenient for you.  You should be seen at least a month before departure, if possible.

Have a great trip to Peru!