Since 2018, Chad has been facing an upsurge in measles cases in its capital N'Djaména. In response to the spread of this disease, MSF launched a vaccination campaign in support of the regional health authorities in January 2023. A total of 955,673 children between the ages of 6 months and 14 years were vaccinated against measles with MSF support.

In the province of Ndjamena, 15 nomadic ferricks (camps) have been identified in 4 health districts. According to their mobility habits, they usually arrive in Ndjamena around October, at the end of the rainy season, and leave around July, after the beginning of the rainy season.
In order to increase routine immunisation coverage in N'Djamena, and particularly among these nomadic populations, which include a large number of children with zero doses of vaccine and who are under-immunised, the Ministry of Health, through the Directorate of Immunisation and the coordination of the National Nomadic Health Programme, has initiated, with the support of MSF, an activity to strengthen routine immunisation for this key population, with adjustments to the targets, taking into account their situation of vulnerability and the current epidemiological context.