In early 2005, the World Health Organization (WHO) began investigating an outbreak of viral hemorrhagic fever in Angola, which was centered in the northeastern Uíge Province but also affected many other provinces.
A inicios de 2005, a OMS empezou a investigar un brote de febre hemorráxica viral en Angola, que estaba centrado na provincia de Uíge do nordeste do país pero tamén afectou a outras provincias.