Am I reading the charts correctly that 20% of under-54s have "marginal, low or very low food security" with it being over 30% of under-14s? If so, focusing only on deaths is missing a huge part of this.

That looks right to me. Of course, the definition of food security can be disputed, but it seems like improving people's diets or access to quality food should be a priority.

> The source we used, a supplement to the Census Bureau’s Current Population Survey, has been canceled by the Agriculture Department. The upcoming release could be the last.

That doesn't sound encouraging.