Nationwide integrated mapping of three neglected tropical diseases in Togo: countrywide implementation of a novel approach.

OBJECTIVE: To conduct a nationwide integrated neglected tropical disease (NTD) prevalence survey to define the need for public health interventions using an innovative mapping protocol. METHODS: Two villages were selected in every peripheral health unit in endemic districts: 29 districts for schistosomiasis and STH, 15 of them for trachoma. In each village, 15 children aged 6-9 years at a randomly selected school were tested. An additional convenience sample of 35 children aged 1-5 years underwent an eye examination for trachoma. This integrated mapping was followed by a 20-cluster trachoma survey in each district that surpassed the WHO-defined threshold of 10% prevalence of trachomatous inflammation-follicular (TF). RESULTS: A total of 1096 villages were surveyed in <6 weeks. The district prevalence of schistosomiasis ranged from 2 to 49% and of STH from 5 to 70%, with prevalence at the village level ranging from 0 to 100% for both diseases. Two districts passed the threshold of 10% for active trachoma, but the cluster survey indicated this was because of misclassification bias and that the real prevalence was <1%. CONCLUSION: Results of this mapping were used by the MoH and partners to plan integrated mass drug administration (MDA). Mass drug administration for trachoma was not implemented as no district passed the threshold requiring public health intervention.

[What do we know about trachoma in the economically weakest infantile population of Kara in Togo?]. / Que savons-nous de la prévalence du trachome dans la population infantile économiquement défavorisée de la region de Kara au Togo?

PURPOSE: To describe the distribution of the trachoma in the infantile population of Kara region. MATERIALS AND METHODS: A descriptive cross sectional investigation has been achieved in 6 sanitary districts of Kara's region in November 2009. In each of the 2 villages of the sanitary area of every peripheral health unit (PHU), 15 schoolchildren aged of 6 to 9 years then 35 children of the community aged of 1 to 5 years have been examined to search signs of trachoma with the help of a lamp wipes coupled of a binocular loupe (2.5X magnification). RESULTS: To the total 10,100 children have been examined in 202 villages of the sanitary areas of 101 PHU. Among the 7070 children aged of 1-5 years, 289 presented trachomatous inflammation follicular (TF) and 131 trachomatous inflammation intense (TI), corresponding to a prevalence rate of 5.94%. Among the 3030 schoolchildren, 68 presented TF and 62 TI corresponding to 4.29% prevalence rate. The prevalence rate of the active trachoma was of 5.44% in the infantile population of this region. CONCLUSION: This investigation could confirm that active trachoma still exists in this region. Another investigation will be carried out to determine the prevalence of trachoma among the adult subjects in order to have a more complete data base in view of further action for trachoma elimination in this region.