May 4, 2026
Essay
MV Hondius Hantavirus Outbreak: What We Know
A source-first guide to the MV Hondius hantavirus outbreak, Andes virus, cruise-ship exposure, travel risk, and what investigators could know.
Topic hub
Pathogen Geography
Map-first work on how pathogens travel through ports, ships, animal reservoirs, water systems, roads, empires, and borders.
Essays
6 linked piece(s)
This hub groups related writing so readers can move from one argument to the surrounding disease history, ecology, and evidence.
January 31, 2026
Essay
Why the Columbian Exchange Did Not Run in Reverse
The usual story breaks when you look at childhood exposure, vectors, cities, empire, and where Europeans actually died abroad.
January 11, 2026
Essay
When Worlds Collided: Disease and Population Collapse in the Americas After 1492
The collapse after 1492 was real, but the usual story is too flat. Ecology, labor, war, and institutions mattered too.
January 3, 2026
Essay
Scourges of the High Seas
Ships carried more than cargo. They moved crowding, hunger, rats, mosquitoes, bad water, and disease across the world.
December 17, 2025
Essay
The Disease Ecology of the Pre-Contact Americas (Part 2: South America)
Altitude, settlement, parasites, animal reservoirs, and the limits of the evidence make South America harder than the simple version.
December 10, 2025
Essay
The Disease Ecology of Pre-Contact Americas (Part 1: North and Central America)
Before 1492, the Americas were not disease-free. Their disease ecology was different, uneven, and badly served by easy summaries.