Eduardo Aguirre Pequeño y Yuriria, Mexican biologist (Hualahuises, Nuevo León State 14 March 1904 – Monterrey 18 July 1988)
Proved that the causative agent of pinta was Treponema carateum (1939) and developed treatment for it
Developed a diagnostic method for Plasmodium vivax at microscope
Found Bufo valliceps Wiegmann for biological pregnancy test (1948)