{"version":"1.0","type":"rich","title":"Transforming World Vaccination Data","description":"This example transforms World Health Organization COVID-19 vaccination data from a CSV file into a structured summary of vaccine types used per country. It loads the dataset via a fetch request, parses the comma-separated values with `d3.csvParse`, and converts numeric string fields into numbers. The visualization then groups records by country using `d3.flatGroup`, extracts vaccine names from each entry’s `VACCINES_USED` field, and counts distinct vaccines per nation. The resulting aggregated list—showing country, vaccine names, and totals—is rendered as a formatted JSON string inside a `<pre>` element, offering a concise textual overview of global vaccination strategies from the WHO data source.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/4d54b6a3e85d4101959d79c1bbd9e8c7?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}