[Serological follow-up of Trypanosoma cruzi infection from 1987 to 1994 in individuals studies in 50 counties of the State of Jalisco, Mexico].
In 1987 the University of Guadalajara performed a seroepidemiological survey in order to know the prevalence of infection for Trypanosoma cruzi in the 124 counties of the state of Jalisco, Mexico in which appraisals of 21.6 for 100 inhabitants were gotten. From December of 1993 to June of 1994 was carried out a pursuit of some those individuals, studying it only to 2669 of they, of 50 municipalities of rural areas of the state. The causes off not survey of the not found was diverse, being between the most important the emigration (27.6%) and the not cooperation (14.8%). We found to 476 positives (17.8%) and 2193 negatives (82.2%). This second study allowed us detect 80 new cases (2.9%) the one which represents an appraisal of incidence of 30 for 100 inhabitants. However we found a seroconvertion in the studied individuals, since of 1007 individuals that were positives in 1987; 943 of them continues so, while 64 individuals became negative (2.3%), not being this attributable to flaws of laboratory, the prevalence of positivite detected in both studies was almost identical, 18.1 and 17.8 % respectly, for the one which we believe that the conditions in that the individuals of the rural towns of the state of Jalisco live favor to that the infections continue.
Contreras
F T
FT
Departamentos de Patología y de Salud Pública, Universidad de Guadalajara, Jalisco, México.
Yerenas
M  de L
M
Gutiérrez
M S
MS
Anaya
M R
MR
Corder
A J
AJ
D014355:Chagas Disease / Q000097:blood* / Q000453:epidemiology; D003430:Cross-Sectional Studies; D005500:Follow-Up Studies; D006801:Humans; D008800:Mexico; D016036:Seroepidemiologic Studies; D012698:Serologic Tests