Most villagers in Senegal don't have access to doctors or even to common medicines. If someone is ill, they go to the witch doctor. Only when a person is in a critical state do they seek out a medical doctor. But often it's too late.
Medical teams setting up clinics in the bush are rare but very welcome. Villagers from miles and miles around trek across the sub-Saharan sands and wait in long lines, sometimes all day, to see a doctor.