Jordan D. Klein
j-d-klein.bsky.social
Jordan D. Klein
@j-d-klein.bsky.social
Research Scientist @mpidr.bsky.social. PhD from @Princeton. Demography, social epi, quantitative & computational social science. he/him #rstats
New on here after finally getting off that cursed site. Views my own.
https://jordan-klein.netlify.app/
New MPIDR press out today on our PNAS Letter (published this week): www.pnas.org/doi/10.1073/...

Migration fell during the pandemic, but not in the ways we think.

Looking beyond total flows shows how border closures curtailed outflows, stranded migrants, and produced unintended consequences.
December 17, 2025 at 11:23 AM
Reposted by Jordan D. Klein
Jordan D. Klein & Ingmar Weber published a Letter to the Editor in Proceedings of the National Academy of Sciences that opens a conversation on the findings of Chi et al (Measuring global migration flows using online data). https://www.demogr.mpg.de/go/PNAS-Letter-Editor

December 17, 2025 at 10:15 AM
Hey Bluesky! 👋 First post here. Just dropped a preprint of the 1st national-scale, data-driven mechanistic model of socio-economic inequalities in COVID-19 mortality in 🇧🇷 doi.org/10.1101/2025...
Must Whatever Goes up Come Down? Mortality Gradients in the Emergence of COVID-19
According to fundamental cause theory, even as disease burdens shift, social inequalities in mortality persist. Yet for emerging infectious diseases, isolating the roles played by underlying social di...
doi.org
April 28, 2025 at 3:44 PM