Table 4

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#

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

Characteristics of rats in Belen and Las Pampas de San Juan de Miraflores^a

Risk factor	Pampas San Juan	Belen	Comparison of sites
	% (pos/total)^b	% (PCR positive/total)^b	p value
No. rats tested	4.9 (2/41)	10.6 (25/235)	p = 0.392
Sex^c
F	6.3 (1/16)	11.6 (15/129)	p = 0.999
M	4.0 (1/25)	8.5 (8/94)	p = 0.683
M vs. F comparison	p = 0.999	p = 0.594
Age groups
Adult	3.9 (2/41)	12.0 (18/150)	p = 0.255
Young (presexual)	0	8.8 (6/68)	p = NA
Infant	0	5.9 (1/17)	p = NA
Trend	p = NA	p = 0.328
Species
Rattus norvegicus	4.9 (2/41)	21.7 (18/83)	p = 0.019
R. rattus	0	4.6 (7/151)	p = NA
Comparison of rat species	p = NA	p < 0.001

^aPCR, polymerase chain reaction; NA, not applicable.
^bLeptospirosis prevalence (number of positive rats/total of rats tested).
^cSex was not known for 12 infants.

Main Article

Page created: February 22, 2011

Page updated: February 22, 2011

Page reviewed: February 22, 2011

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