Traveling to Seychelles, including Praslin, doesn't require any specific vaccinations. However, it's advisable to exercise the usual caution typical in warm, southern countries. Intestinal infections are a common concern in the archipelago, so vaccination against hepatitis A is recommended for tourists. Fortunately, tropical diseases have been eliminated from these tourist islands for many years.
When considering necessary immunizations for Praslin, some meticulous travelers mention tetanus and polio. Simply ensure that your vaccinations are up to date. If needed, there's a tourist clinic on Mahé Island, located in Mount Fleury. Consultations with a doctor there typically cost around 75-100 Seychellois Rupees (SCR).