For most South American countries there are several vaccinations that are strongly recommend and some that are obliged for some regions. The most common recommend ones are;
Validity of recommended vaccines (correct at time of publishing).
Yellow Fever 10 years (Obliged for some countries such as Bolivia and Colombia)
Typhoid 3 years
Hepatitis A 10 – 20 years (depending on the vaccine)
Polio 10 years
Tetanus 10 years
Please keep in mind that for some countries (Bolivia & Colombia) and for some parts of South America (Peruvian and Brazilian Jungle) the Yellow Fever Vaccination is obliged and sometimes will be checked at the border. Therefore, when travelling to one of these countries or regions, it is advisable to always have your Yellow Fever Vaccination Card with you (in most cases a yellow booklet containing all your vaccinations).
In general, it’s important that you receive the most accurate and up-to-date travel health information for the region you will be visiting. Therefore in any case you should go for a personal consultation with a medical specialized person. As we are no medical professionals, this information is no substitute for obtaining accurate medical information. The only one qualified to provide you with this advice is your family physician or a specialist from a Travel Health clinic.