Volume 84, Issue 1
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



The association of wealth and infections with , , , and microsporidia were examined in a longitudinal cohort conducted in Peru from 2001 to 2006. Data from 492 participants were daily clinical manifestations, weekly copro-parasitological diagnosis, and housing characteristics and assets owned (48 variables), and these data were used to construct a global wealth index using principal component analysis. Data were analyzed using continuous and categorical (wealth tertiles) models. Participant's mean age was 3.43 years (range = 0–12 years), with average follow-up of 993 days. Univariate and multivariate analyses identified significant associations between wealth and infections with and microsporidia. Participants with greater wealth indexes were associated with protection against ( < 0.001) and persistent infections (> 14 days). For microsporidia, greater wealth was protective ( = 0.066 continuous and = 0.042 by tertiles). Contrarily, infections with and were independent of wealth. Thus, subtle differences in wealth may affect the frequency of specific parasitic infections within low-income communities.


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  • Received : 09 Aug 2010
  • Accepted : 12 Oct 2010
  • Published online : 05 Jan 2011

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