An entire Bilma department and the rural areas of the department of Arlit of the Agadez region were excluded from the sample. Also of the Diffa region, the entire department of Bosso, the communes of Gueskerou, Toumour and Kablewa were excluded due to security reasons. In the region of TillabÃ©ri, the departments of entire Banibangou and GothÃ¨ye, the Sanam and KourfÃ¨ye Center communes were excluded and the excluded populations in total represent 3.3% of the total population of Niger