Visas: Only German and French citizens can
enter Chad without a visa. For all other nationals, visas for between one week and three
months are fairly easy to obtain. From other African countries, visas are usually issued
by the French embassy. You can't get a visa for Chad in Rwanda. Exit visas are required if
travelling to Niger or Sudan.
Health risks: You will require immunizations (and, often, proof of this) against
yellow fever, cholera, tetanus, typhoid and hepatitis A. You'll also need to guard against
giardia, dysentry, fungal infections, rabies, tuberculosis, bilharzia, diptheria, malaria,
meningococcal meningitis, typhus and a whole textbook of other water-, insect- and
air-borne diseases.