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The prevalence of blinding trachoma in northern states of Sudan.

Hassan A, Ngondi JM, King JD, Elshafie BE, Al Ginaid G, Elsanousi M, Abdalla Z, Aziz N, Sankara D, Simms V, Cromwell EA, Emerson PM, Binnawi KH - PLoS Negl Trop Dis (2011)

Bottom Line: TF prevalence was above 10% in three districts and between 5% and 9% in 11 districts.TT prevalence among adults was above 1% in 20 districts (which included the three districts with TF prevalence >10%).The overall number of people with TT in the population was estimated to be 31,072 (lower and upper bounds = 26,125-36,955).

View Article: PubMed Central - PubMed

Affiliation: Federal Ministry of Health, Khartoum, Sudan.

ABSTRACT

Background: Despite historical evidence of blinding trachoma, there have been no widespread contemporary surveys of trachoma prevalence in the northern states of Sudan. We aimed to conduct district-level surveys in this vast region in order to map the extent of the problem and estimate the need for trachoma control interventions to eliminate blinding trachoma.

Methods and findings: Separate, population based cross-sectional surveys were conducted in 88 localities (districts) in 12 northern states of Sudan between 2006 and 2010. Two-stage cluster random sampling with probability proportional to size was used to select the sample. Trachoma grading was done using the WHO simplified grading system. Key prevalence indicators were trachomatous inflammation-follicular (TF) in children aged 1-9 years and trachomatous trichiasis (TT) in adults aged 15 years and above. The sample comprised 1,260 clusters from which 25,624 households were surveyed. A total of 106,697 participants (81.6% response rate) were examined for trachoma signs. TF prevalence was above 10% in three districts and between 5% and 9% in 11 districts. TT prevalence among adults was above 1% in 20 districts (which included the three districts with TF prevalence >10%). The overall number of people with TT in the population was estimated to be 31,072 (lower and upper bounds = 26,125-36,955).

Conclusion: Trachoma mapping is complete in the northern states of Sudan except for the Darfur States. The survey findings will facilitate programme planning and inform deployment of resources for elimination of trachoma from the northern states of Sudan by 2015, in accordance with the Sudan Federal Ministry of Health (FMOH) objectives.

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Related in: MedlinePlus

Distribution of estimated cases of trachomatous trichiasis (TT) by age and gender (n = 31,072).
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Related In: Results  -  Collection


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pntd-0001027-g004: Distribution of estimated cases of trachomatous trichiasis (TT) by age and gender (n = 31,072).

Mentions: The estimated objectives for the implementation of SAFE in the northern states of Sudan, by locality, are summarised in Table 2. It was estimated that 31,072 people in the northern states had TT (lower and upper bounds = 26,125–36,955) [Figure 4]. Based on TF prevalence estimates, three and 11 districts were eligible for mass antibiotic distribution and targeted antibiotic distribution, respectively. We estimated that all 88 localities surveyed were eligible for facial hygiene promotion while 548,678 household latrines were required to meet the MDG indicator 7.9 in all areas surveyed.


The prevalence of blinding trachoma in northern states of Sudan.

Hassan A, Ngondi JM, King JD, Elshafie BE, Al Ginaid G, Elsanousi M, Abdalla Z, Aziz N, Sankara D, Simms V, Cromwell EA, Emerson PM, Binnawi KH - PLoS Negl Trop Dis (2011)

Distribution of estimated cases of trachomatous trichiasis (TT) by age and gender (n = 31,072).
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3104955&req=5

pntd-0001027-g004: Distribution of estimated cases of trachomatous trichiasis (TT) by age and gender (n = 31,072).
Mentions: The estimated objectives for the implementation of SAFE in the northern states of Sudan, by locality, are summarised in Table 2. It was estimated that 31,072 people in the northern states had TT (lower and upper bounds = 26,125–36,955) [Figure 4]. Based on TF prevalence estimates, three and 11 districts were eligible for mass antibiotic distribution and targeted antibiotic distribution, respectively. We estimated that all 88 localities surveyed were eligible for facial hygiene promotion while 548,678 household latrines were required to meet the MDG indicator 7.9 in all areas surveyed.

Bottom Line: TF prevalence was above 10% in three districts and between 5% and 9% in 11 districts.TT prevalence among adults was above 1% in 20 districts (which included the three districts with TF prevalence >10%).The overall number of people with TT in the population was estimated to be 31,072 (lower and upper bounds = 26,125-36,955).

View Article: PubMed Central - PubMed

Affiliation: Federal Ministry of Health, Khartoum, Sudan.

ABSTRACT

Background: Despite historical evidence of blinding trachoma, there have been no widespread contemporary surveys of trachoma prevalence in the northern states of Sudan. We aimed to conduct district-level surveys in this vast region in order to map the extent of the problem and estimate the need for trachoma control interventions to eliminate blinding trachoma.

Methods and findings: Separate, population based cross-sectional surveys were conducted in 88 localities (districts) in 12 northern states of Sudan between 2006 and 2010. Two-stage cluster random sampling with probability proportional to size was used to select the sample. Trachoma grading was done using the WHO simplified grading system. Key prevalence indicators were trachomatous inflammation-follicular (TF) in children aged 1-9 years and trachomatous trichiasis (TT) in adults aged 15 years and above. The sample comprised 1,260 clusters from which 25,624 households were surveyed. A total of 106,697 participants (81.6% response rate) were examined for trachoma signs. TF prevalence was above 10% in three districts and between 5% and 9% in 11 districts. TT prevalence among adults was above 1% in 20 districts (which included the three districts with TF prevalence >10%). The overall number of people with TT in the population was estimated to be 31,072 (lower and upper bounds = 26,125-36,955).

Conclusion: Trachoma mapping is complete in the northern states of Sudan except for the Darfur States. The survey findings will facilitate programme planning and inform deployment of resources for elimination of trachoma from the northern states of Sudan by 2015, in accordance with the Sudan Federal Ministry of Health (FMOH) objectives.

Show MeSH
Related in: MedlinePlus