Yellow Fever Travel Update: Costa Rica will require a yellow fever vaccination certificate (digital) starting Oct 1 for travelers to Bolivia, Ecuador, Paraguay, Trinidad and Tobago, Venezuela, Suriname, Guyana, and French Guiana, with vaccine doses needed at least 10 days before travel and an International Certificate of Vaccination carried on trips; exemptions include infants under 9 months, people over 60, pregnancy/breastfeeding, severe egg/gelatin allergy, and severe immunosuppression. Space & Health-Linked Environment Monitoring: Two new European satellites—Sentinel-3C and FLEX—were launched from the European Spaceport in French Guiana (Sept 15) to improve monitoring of land/sea temperature, ocean color, ice, atmosphere, and to support work like wildfire detection and water quality tracking, including spotting algal blooms. Regional Tech Leadership: Konris Maynard was elected President of the Caribbean Telecommunications Union during CTU ICT Week 2026 in French Guiana (Sept 23), signaling continued regional focus on telecommunications and ICT cooperation.