The following is taken from www.worldtravelguide.net and refers to Colombia. Things can change rapidly so as Wilba says check with your GP. You need the jabs at least six weeks before you leave. If you are returning through USA you also need to check which vaccinations certificates they need to see.
Hepatitis A Yes
Yellow Fever Yes
Inoculation regulations can change at short notice. Please take medical advice in the case of doubt. Where 'Sometimes' appears in the table above, precautions may be required, depending on the season and region visited.
Food and Drink
All water should be regarded as being potentially contaminated outside major cities. Water used for drinking, brushing teeth or making ice should have first been boiled or otherwise sterilised. Milk may be unpasteurised in places and should be boiled. Only eat well cooked meat and fish. Vegetables should be cooked and fruit peeled.
Vaccinations against tuberculosis and hepatitis B are sometimes recommended. Hepatitis C occurs. Outbreaks of dengue fever sometimes occur.
Health facilities in the main cities are good. In rural areas, services can be very limited. Visitors travelling to jungle areas are advised to carry first aid kits. Travellers are strongly advised to take out full medical insurance.
Your Practice Nurse at your GP will have an up to date list of destinations that require/advise jabs.....Wilba.