Revista Peruana de Medicina Experimental y Salud Publica
versión impresa ISSN 1726-4634
HERRER, Arístides et al. Estudios sobre la enfermedad de Carrión en el valle interandino del Mantaro: II. Incidencia de la infección bartonelosica en la población humana. Rev. perú. med. exp. salud publica [online]. 1960, vol.13, n.1-2, pp. 47-57. ISSN 1726-4634.
In order to determine the endemic zone of Carrion's disease or verruga peruviana in the Mantaro valIey, during the last two weeks of April, 1959, 239 blood cultures were taken and a survey was carried out in that region. 215 of these cultures belong to human beings and the other 24 to several domestic animals. During the survey, popular know-ledge (folk-lore) about Carrion's disease was taken into account and, at the same time, special attention was given to the presence of cutaneous nodules due to verruga peruviana. The principal results obtained, are as folIow: 1. Five positive, 172 negative and 38 contaminated cultures were obtained from human beings; and, 13 negative and 11 contaminated, in the series belonging to domestic animals. All the persons with positive blood culture live between 2800-3000 meters altitude above sea level. 2. Two of 5 persons with positive blood culture presented fever and showed abundant bartonelIa (etiological agent of Carrion' s disease) in the peripheral blood at the time the blood sample was withdrawned. The other three have no symptoms due to verruga peruviana, and two of them were observed during 15 months, during which time no cutaneous nodules were observed. 3. The survey shows that in the Mantaro valley the verruga is unknown by the people. On the other hand, the authors have seen only two cases of verruga-like nodules. 4. It is suggested that Carrion's disease is endemic at a high altitude in the Mantaro valley, and that cutaneous nodules are very rare; likewise, the supposed severity of Carrion's disease in that valIey, is discussed.