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Volume 10, Number 6—June 2004

Research

Environmental Exposure and Leptospirosis, Peru

Michael A.S. Johnson*†, Hannah Smith†, Priya Joseph†, Robert H. Gilman*†, Christian T. Bautista*‡, Kalina J. Campos*§, Michelle Cespedes†, Peter Klatsky†, Carlos Vidal¶, Hilja Terry†, Maritza M. Calderon*§, Carlos Coral†, Lilia Cabrera†, Paminder S. Parmar†, and Joseph M. Vinetz#Comments to Author 
Author affiliations: *Asociación Benéfica Prisma, Lima, Peru; †Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA; ‡U.S. Naval Medical Center Research Detachment, Lima, Peru; §Universidad Peruana Cayetano Heredia, Lima, Peru; ¶Ministry of Health, Iquitos, Peru; #University of California San Diego School of Medicine, La Jolla, California, USA

Main Article

Table 1

Site description and demographic characteristics of the study population

Feature Pampas San Juan Rural communitiesa Belen
Study period
April 1997
Feb–Jun 2000
Feb–Oct 2001
Population
38,721
1,197
3,704
No. households selected (%)
7,744 (20)
132 (56)
386 (60)
No. participants tested (%)
150 (0.4)
316 (26)
650 (18)
Sample population



Female (%)
57 (38)
152 (48)
356 (55)
Age >18 y (%)
64 (43)
170 (54)
533 (82)
Mean (SDb) age, y
17.5 (14.5)
24.9 (17.9)
30 (15.2)
Median
11
22
29
Mean (SD) no. persons per household
5.7 (2.2)
2.4 (1.6)
1.7 (0.9)
Range 3–14 1–9 1–5

aCombined populations of the villages of San Carlos, Moralillo, and Buen Pastor in the peri-Iquitos area.
bSD, standard deviation.

Main Article

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