The article is confusing because it fails to differentiate between infant mortality rate (before 1) and childhood mortality rate (defined in the cited paper as

The article is confusing because it fails to differentiate between infant mortality rate (before 1) and childhood mortality rate (defined in the cited paper as 1-19). The article purports to be about childhood mortality but the only graph shown is of infant mortality. From the linked paper abstract: "From 2001 to 2010 the risk of death in the US was 76 percent greater for infants and 57 percent greater for children ages 1–19." So the numbers as presented in this article are kind of misleading but it still looks quite bad for the US. Lack of decent healthcare access remains an issue for a huge fraction of the population.