1 / 6

Trachoma Surveys by Segment (TSS) and “TT40” methods in seven districts in Kenya

Trachoma Surveys by Segment (TSS) and “TT40” methods in seven districts in Kenya . Dr. Jefitha Karimurio Supervisors: Prof. Jill Keeffe , A/Prof. Richard Le Mesurier , A/ Pof . Mutuku Mwathi. Problem statement. Kenya districts 80,000 to 1,000,000 people

romeo
Download Presentation

Trachoma Surveys by Segment (TSS) and “TT40” methods in seven districts in Kenya

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Trachoma Surveys by Segment (TSS) and “TT40” methods in seven districts in Kenya • Dr. JefithaKarimurio • Supervisors: • Prof. Jill Keeffe, A/Prof. Richard Le Mesurier, A/Pof. MutukuMwathi

  2. Problem statement • Kenya districts 80,000 to 1,000,000 people • Trachoma clustered in dry areas • In large districts (>200,000 people) clusters widely scattered. • Endemic communities missed and non-endemic ones treated. • Also, TT surveys in persons >15 years require large samples

  3. The new methods • TSS method • Districts were divided into segments with 100,000-200,000 people each (standardized intervention units). • Areas with similar risk scores aggregated in a segment • The TT40 method • Previous data sets re-analysed to calculate the optimum lower age limit for TT survey participants (40 years).

  4. Results • 7 administrative districts • 16 segments surveyed • 6 needed MDA x 5 years • 4 needed it x 3 years • 6 excluded from MDA

  5. % of TT cases likely to be missed (n= 316 cases) Backlog of TT correction factor for age >40 years = 1.1

  6. Conclusion • TSS is an effective method to indentify the areas that need mass treatment. • It reduced the cost of mass treatment by exclusion of the segments which do not require MDA • TT40 method improves the efficiency of a trachoma survey • Correction factor is required to extrapolate the total backlog

More Related