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- Our World in Data
- Child mortality decline
Child mortality decline
Our World in Data's line chart drew 77K views on X: 2.7x its typical post and #29 of 139 Our World in Data charts we track by views. Read Oct 10, 2026.
Declining child mortality, fast and slow, As this chart shows, two centuries ago, about one in three children in Sweden died before they were five years old.
Why it spread
This chart post from Our World in Data spread because it came from an independent author on a hot topic that week, pairing a clear line chart of child mortality falling over centuries with a post that reached 77,018 views, 517 likes, 116 reposts, 10 quotes, and 83 saves.
What worked
- The post opens with a concrete human fact, that about one in three children in Sweden died before they were five two centuries ago, which makes the long decline easy to grasp.
- The chart is a simple line type with a visible source line and a branded look, so the trend reads quickly even at medium design polish and medium self labelling.
- The framing contrasts fast and slow declines, using Sweden's fall to 0.3% and South Korea's faster similar reduction to keep the topic timely.
What to borrow
We could take one of our own long-run series, lead with a single striking starting point, then show the fall to a small current figure and contrast a slower case with a faster one.
Careful
Do not over-read the spread as proof of our own reach, since the account is an independent author, the topic was hot that week, the quote rate was below average, and the source reach sat only in the top quarter.
Written by our analysis model from the measured numbers above, not by Our World in Data.
Make it yours
We have not read this chart's numbers yet
Its own maker appears here once its numbers are read. Until then, these are other real charts in a similar format: each data page starts from that chart's numbers and takes yours.
API · Max
Use this chart via API
On the Max plan you can pull this chart's numbers with the provenance of each one, as JSON or CSV, with its redraw spec, or call it from an agent over MCP. Chart id 146a0d3acc37.
Approximate values. Our two readings of this chart agreed only in part (confidence 0.31 of 1), so check the original before you quote a number. The API marks it lowConfidence, and ?min_confidence=0.5 leaves it out.
| Path | Returns | Plan | |
|---|---|---|---|
| GET | /api/v1/charts/146a0d3acc37 | Title, publisher, date, form, point count; with a Max key, the data link | Open |
| GET | /api/v1/charts/146a0d3acc37/data | Every point with its provenance and confidence, plus the redraw spec. Add ?format=csv for CSV | Max |
| GET | /api/v1/charts/146a0d3acc37/render?view=1 | The draw-only view this page uses | Open |
| POST | /mcp | Tool get_chart_data with this id, for Claude, Cursor and other agents | Max |
curl -s https://viral-chart.com/api/v1/charts/146a0d3acc37/data \
-H "Authorization: Bearer $VIRALCHART_KEY"claude mcp add --transport http viralchart https://viral-chart.com/mcp \
--header "Authorization: Bearer $VIRALCHART_KEY"60 requests a minute per key; over that you get 429 with Retry-After. Up to 5 keys per account, made on your account page and shown once. Without Max, the data route answers 402 with a link to the plans. The numbers describe a chart its publisher owns, and every file carries a license note.
More from Our World in Data
All 139
Other giants using a line chart
All 295
Questions people ask
How far did Our World in Data's "Child mortality decline" chart travel?
77,018 views, 517 likes, 116 reposts and 83 saves on X, read Oct 10, 2026. A normal post from @OurWorldInData gets about 28.6K views.
What kind of chart is it?
A line chart. Child mortality rates fall dramatically over centuries.
Can I use Our World in Data's chart?
Use the format, not the picture. The chart, logo and design belong to Our World in Data. ViralChart redraws the chart type with your numbers and words, and credits the original publisher.