Global Repository of Epidemiological Parameters

This visualization provides an interactive graphical overview of epidemiological parameter estimates grouped by disease and WHO region, allowing users to explore the geographical distribution of available data.

• Stacked bar chart: Parameter estimates are displayed using a stacked bar chart, where each bar represents a disease and is subdivided by WHO regions.​
• Hover interaction: Hover over individual bars or segments to display additional information (e.g. counts per region).
• WHO region legend: The legend on the side shows color‑coded WHO regions.
• Filter by region: Click on one or more regions in the legend to deselect them and dynamically update the chart. Click again to re‑include them.
• Navigate to parameter list: Click on a disease in the chart (e.g. Lassa fever) to navigate to the filtered table view showing only parameter estimates for that disease.
• Return to home: Use the navigation menu (Home) to return to the dashboard.

Epidemiological Parameters view contains the core dataset: epidemiological parameter estimates extracted from the literature. Each row represents a single epidemiological parameter estimate (e.g., an incubation period for Mpox from a specific study).

• Searching: The search bar above the table performs a full-text multi-term search across all fields currently visible in the grid.
• To perform a search you can enter multiple keywords separated by spaces, and the table will filter the rows that match all of those terms across any combination of fields.
• For example, entering "mpox incubation germany" will return rows where the disease is Mpox, the parameter subtype is Incubation period, and the Countries (Population) field includes Germany.

You can adjust the table according to your needs.

• Sorting: Click a column header to sort the table by that column. The sort direction is indicated by an arrow. ​Only one sort can be active at a time (sorting by a new column replaces the previous sort). The default sort is by Disease (ascending), which groups estimates for the same disease together.
• Reordering columns: You can reorder columns by clicking on a column header and dragging it to a new position in the table.
• Pagination: The table displays 20 rows per page by default. The Page size dropdown offers three options: 20, 50, or 100 rows per page. Navigation controls at the bottom allow moving between pages (first, previous, next, last). ​The total number of records is shown (e.g., "1 to 20 of 1000").

In addition to the search function, you can use multiple column filters to easily locate specific epidemiological parameter estimates.

• Each column header includes a filter icon. Click it to apply a filter to that column.
• The filter supports multiple operators: Contains, Does not contain, Equals, Does not equal,Begins with, Ends with, Blank, and Not blank.
• Multiple column filters can be active at the same time.

The detail view provides a comprehensive breakdown of the selected record, including a high-level summary of the disease, pathogen, and estimate, followed by structured sections covering disease classification and transmission, parameter categorization, and the estimate itself with associated uncertainty.

• Eye icon: Click the eye icon in the Action column to open a detailed view of a specific epidemiological parameter estimate.
• Help icon: Hover over the circled question mark next to the field labels for a brief description of what the field means.​
• Back button: A Back button at the bottom allows you to easily return to the main table.

The detailed view of an epidemiological parameter estimate allows users to compare two versions side by side, providing a structured overview of changes across all fields. This feature is only available when there is more than one version of the apidemiological parameter estimate entry.

• Compare versions: Click on Compare versions button to open the compare view and display two versions next to each other.
• Version selection dropdown: Use the version selector at the top of each panel to choose which versions to compare. The current version is labeled as Active (Current), while previous versions are clearly indicated.​
• Legend: A legend at the top of the compare view explains how changes are highlighted: Green indicates content that has been added, Red indicates content that has been removed, Yellow indicates content that has been modified
• Side-by-side comparison: The screen is divided into two panels, allowing users to view and compare field values across versions in a structured table format (e.g. Disease and Pathogen, Parameter Categorization).
• Colored rows: Differences between versions are visually highlighted within the table making it easy to identify what has changed across versions.
• Exit compare: Click Exit compare to return to the standard parameter detail view.

The full dataset contains over 100 properties of an epidemiological parameter estimate, and properties of the literature and primary data source. The default view shows small subset of properties.

• Select button: Click the Select button above the table to locate and add additional columns in the table view and in export, or to remove some shown column from the table view.
• Select All: Click the Select All button if you want to see all available properties in the table view.​
• Remove All: Click the Remove All button if you want to clear/empty the table view of all properties.

The Literature section lists the source publications from which parameter estimates have been extracted.

• Interface controls: Search, column filters, sorting, pagination, select, export and pagination all work the same way as in the Epidemiological Parameters table.
• Action column: The Action column contains a three-dot menu for each row. Click it to access the History option, which opens a pop-up showing the change history for that entry.​
• Select button: Click the Select button above the table to locate and add additional columns in the table view and in export, or to remove some shown column from the table view.

Reference Data holds the controlled vocabularies that define the valid values used throughout grEPI.

• Landing page: The Reference Data landing page displays a card-based overview of all reference data catalogues and mapping tables.
• Cards: Click any card to open that reference data catalogue.​
• Interface controls: Search, column filters, sorting, select, export and filter operators work the same way as in the epidemiological parameters section.

Each of the three main sections - Epidemiological Parameters, Literature, and Reference Data (individual catalogues) supports data export in CSV format.

• What gets exported: Columns: The exported CSV includes only the columns that are currently selected via the Select button. By default, only a subset of columns is selected. Rows: By default, the export includes all rows in the table (unfiltered). The export will be filtered in two situations: if you have entered text in the search bar, only rows matching that search will be exported; or if you have selected specific rows using the checkboxes in the left-hand column, only those selected rows will be exported.
• Configure your export: ​Use the Select button to choose which columns to include. Click Select All button if you want every available field to be included in the exported file. Optionally, apply desired search conditions and filters to include only records of your interests, or use checkboxes in the table to select specific records (entries).
• Export button: Click the Export button to download the CSV file.