Mexico's Instituto Bacteriológico Nacional (National Bacteriological Institute) was created in 1905 in order to conduct research for the production of serums and vaccines for the struggle against diseases and epidemics. Between 1910 and 1911, and despite economic limitations  and the pressure  of Porfirian  authorities, the Institute carried out spearhead research on exanthematic typhus, later acknowledged by Henrique da Rocha-Lima, the Brasilian scientist who eventually  described  the bacteria. The beginning of the Mexican Revolution interrupted the Institute's progress, and although it continued its work later on, it never recovered its strength.