EXCEPTIONS

People who have been in countries considered at risk, but who have remained at least six days in a non-risk country before entering Costa Rican territory and who haven’t developed the yellow fever.
People with contraindications for the vaccination against yellow fever who carry a valid medical opinion supported by the health authority in the country from where they are from.
Children under 9 months old, people with severe allergy to eggs, immunosuppression and thymic disease present or in their medical history.
There must be a medical assessment of the pros and cons of vaccination on people with the following conditions: over 60 years of age, pregnancy, lactation, family history of adverse events associated with vaccination against yellow fever, hypersensitivity to gelatin and asymptomatic HIV infection, with laboratory verification of adequate immune system function.