There are many highly used templates on WP with time-series data about COVID spread: cases, tests, health outcomes, by region + per day. Each cell has a source and some context (caveats, multiple slightly conflicting or time-offset sources, commentary about that data point), and would benefit from being explicitly versioned in Wikidata.

What's the right way to capture this in Wikidata - currently, and in the future? EN Wikipedia tends to have one footnote about sourcing per geography, with occasional footnotes about how some of those sources have changed over time. I don't know of any of these templates that are drawing from Wikidata.