Name a human disease, its causal organism, symptoms (any three) and vector, spread by intake of water and food contaminated by human faecal matter. [3]

Amoebiasis is spread by the intake of water and food contaminated by human faecal matter in which houseflies act as mechanical carriers (vector) [1]. It is caused by Entamoeba histolytica [0.5]. The symptoms include: [0.5 mark for each point]
(i) Loose stools and mild abdominal cramps
(ii) Loss of weight and appetite
(iii) Anaemia