HTrack

HTrack captures and manages field-level epidemiological and navigation data for public health studies, enabling secure electronic data capture and navigation to randomly selected structures for arboviral disease surveillance.

Key Features:

• Offline and online operation: Supports both offline and online data collection to accommodate variable field connectivity.
• R-Shiny implementation: Implemented as an R-Shiny application for application logic and data handling.
• Encrypted Android deployment: Runs on encrypted Android devices to meet data-security requirements.
• Secure field navigation: Guides users to randomly selected structures within study areas for field visits.
• Field-level visit outcome capture: Records visit outcomes across multiple field visits for participant recruitment documentation.
• Integration with Epi Info: Facilitates transfer or integration of participant-level questionnaire data with Epi Info.

Scientific Applications:

• COPA project deployment: Deployed in the Communities Organized to Prevent Arboviruses (COPA) project to investigate arboviral disease incidence across 38 communities in Puerto Rico.
• Field epidemiological data collection: Used to navigate field sites and capture participant recruitment and visit outcome data with linkage to questionnaire records.

Methodology:

Implemented as an R-Shiny application for encrypted Android devices, providing offline/online operation, secure navigation to randomly selected structures, capture of visit outcomes, and integration with Epi Info for participant-level questionnaire data.