plagues of 16th century Mexico may have been native

Picking this up from ArchaeoBlog. It sounds familiar. Searching for Rodolfo Acuña-Soto turns up the actual paper Large epidemics of hemorrhagic fever in Mexico 1545-1815 as well as a Discover article from February 2006. Even the Aztecs did not think that the epidemic of 1545 was smallpox, which they were already familiar with, identifying it as zahuatl, while this later plague was called cocolitzli, and was recorded as having significantly different symptoms. Cocolitzli started in the highlands and not by the sea. Curious.