Prevalence and magnitude of Trachoma in a local government area of Sokoto State, North Western Nigeria

Mapping trachoma in 25 local government areas of Sokoto and Kebbi states, northwestern Nigeria

“…The programme needs to be expanded to more LGAs to deliver community-based lid surgical services through collaboration between different stakeholders. The findings in this survey are generally lower than the TT prevalence (0.5% to 1.8%) reported in the previously surveyed LGAs in Kebbi7 and Sokoto states,6 probably because the previous surveys were conducted in areas known to have a higher trachoma burden based on a rapid assessment survey conducted earlier. Also, the prevalence is lower than that reported from the neighbouring state of Katsina10 where all the surveyed LGAs10 have a TT prevalence greater than 1%.…”

“…For TT assessment in persons 15 years and above, a minimum sample size of 3344 persons was obtained assuming an anticipated population TT prevalence of 1.0% (based on the TT prevalence of 0.6% to 1.8% in nearby LGAs),6 7 an absolute precision of 0.5%, a confidence level of 95% and a design effect of 2. An additional 10% was also added to cover non-response.…”

“…In each of the LGAs, the study population was chosen by a two-stage cluster random sampling technique, which is similar to that reported in a previous publication 6. A list of towns/villages for each LGA was used as the sampling frame from which 20 clusters were selected randomly using systematic sampling with probability proportional to size; within each cluster a ward was selected using simple random sampling and eligible households were then selected using a random walk technique starting from the centre of the ward until the desired number of households was obtained.…”

Prevalence of Trachoma in Jigawa State, Northwestern Nigeria

“…This is similar to findings in Yobe State and the Niger Republic, 11,14 but lower than those from Sokoto State, 21 the Sudan 20 and Ethiopia. 22 However, the prevalence in our study was higher than in neighboring Katsina 12 and Kano States.…”

Integrating NTD Mapping Protocols: Can Surveys for Trachoma and Urinary Schistosomiasis Be Done Simultaneously?

“…However, our sampling fraction in the majority of schools was one third or greater, and school attendance rates were high, possibly improving our estimate of true prevalence in the community. Trachoma was hypoendemic in all of the surveyed LGAs compared with results from other states within the country [16][17][18] and the other LGAs within the same states according to unpublished surveys. Based on LGA-level estimates derived from both survey methodologies, none of the LGAs qualify for district-wide intervention to control trachoma.…”