| [outbreak of bubonic plague in jacocha, huancabamba, perú ]. | climatic alterations arising in the north of perú as a result of the el niño phenomenon (enso) have caused variations in the crop volume, changes in the direction of rivers and probably an increase in the rodent population. in february 1999, in a native community in jacocha, huancabamba, piura's mountains, perú, an outbreak of bubonic plague appeared with five human cases, one of which lead to death. the diagnosis was confirmed by serology (passive hemaglutination). the presence of antibodies in ... | 2001 | 11340502 |