The dominant religion of French Guiana is Roman Catholicism; the Maroons and some Amerindian people maintain their own religions. The Hmong people are also mainly Catholic owing to the influence of missionaries who helped bring them to French Guiana.
France is responsible for general public health, but the competencies specifically pertaining to health are divided between the State level and the local administrative units, which draw up and implement local health policies, undertake health surveillance, and participate in policy development for public and private hospitals, human resources development, and the organisation of networks of health professionals.
If you are planning to visit the French Guiana, you should definitely know something about its weather. That way you will have the appropriate clothing.