Fig. 1

a and b Map of Self-reported Country of Origin of Asylum Seekers utilizing Health Services in Matamoros, Mexico encampment from November 2019 to March 2021. Legend: Self-reported Countries of origin of asylum seekers in Matamoros, Mexico, 2019–2021 from Mexico and Central (1a) and South (1b) America. Countries with fewer than 20 patients were aggregated into the “Other” category to guarantee anonymity and not reported directly on Fig. 1. Of note, these are self-reported countries of origin which were recorded by clinicians as part of the clinical encounter. There may be limitations due to these being self-reported. These include migrants who have been traveling for years reporting their most recent country of emigration (as is common among Haitian migrants traveling from Brazil and Chile), or the most recent country of visitation (such as the United States and Canada). However, those identifying as being from the United States likely were but were deported at a young age