New Articles

  1. Serology and infection testing articles

    Below you can access three articles which exemplify some of the methods used to collect and process samples as part of 'plus' surveys. Click on picture to download. ...
  2. Introduction to serology and infection data collection

    Click here for our Introduction to adaptations being made to Tropical Data to incorporate serology and infection data collection ...
  3. Publications

    In this section you can find relevant articles on model-based geostastics, including trachoma and other NTDs.  Sasanami et al., 2023 Sasanami and Giorgi_2023.pdf Johnson et al., 2021  Johnson and Diggle_2021.pdf ...
  4. Glossary of terms

    Glossary of terms Binomial model : A statistical model used to analyse data with two possible outcomes, typically denoted as "success" and "failure." Covariate : A variable that is not the primary focus of a study but is c...
  5. How do we decide between two different outputs, one from the standard analysis and one from MBG?

    This is a technical decision and a political one. We will seek advice from the SAG to help make recommendations to health ministries for such scenarios.
  6. Who owns the MBG output?

    All outputs from the model will be owned by the countries whose data were used to generate them.
  7. When will we have official confirmation from WHO/Tropical Data to use MBG?

    MBG was officially confirmed as an acceptable method to demonstrate that TT prevalence was below the elimination threshold at the 4th Global Scientific Meeting on Trachoma in 2018 (https://www.who.int/publications/i/item/who-htm-ntd-pct-2019.03) a...
  8. Is there any support available for health ministries interested in implementing MBG?

    Currently, the MBG models require intensive computations and the larger the datasets that have to be processed, the longer it takes - some take up to a week to generate results! It is therefore not yet possible for Tropical Data or Lancaster Univers...
  9. Where is the funding coming from to support the research and the Tropical Data development?

    Funding is currently provided by the United States Agency for International Development (USAID) via the Task Force for Global Health, until May 2024.
  10. Is it possible to use MBG for an entire country?

    Theoretically yes, it is possible, however it would be context dependent. To date, MBG has been implemented to estimate trachoma prevalence for a specific area (usually an individual EU) by using data from a wider area within the same country. We ...