Fig. 1. Seroprevalence of T. gondii across four countries.

a Countries compared herein are highlighted. Across our countries of interest, there is significant variation in seroprevalence, with the United States having the lowest overall seroprevalence and Colombia having the highest. Contributing factors to this variation must include exposure to oocysts from cats and contaminated meat. Factors that influence these exposures include climate, host behaviors, and public health infrastructure. b There is regional variation within countries. In Colombia, there is significant variation that correlates with annual rainfall, which is associated with oocyst survival and with oocysts contaminating the environment⁵⁵. Regions without seroprevalence data available are marked N.A. (no data available), while increasing rates of seroprevalence are indicated by darkening of the shading of the region. Seroprevalence data for the generation of these maps were obtained from several sources^{40,41,47,49,55}. Maps were generated with Carto