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.
SJ