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Volume 15, Number 4—April 2009
THEME ISSUE
The Amazon Region

Dispatches

Seroprevalence of Kaposi Sarcoma–associated Herpesvirus and Other Serologic Markers in the Brazilian Amazon

Maria C. NascimentoComments to Author , Laura M. Sumita, Vanda U. Souza, Helen A. Weiss, Juliane Oliveira, Melissa Mascheretti, Mariana Quiroga, Rodrigo A.R. Vela, Ester Sabino, Claudio S. Pannuti, and Philippe Mayaud
Author affiliations: Universidade de São Paulo, São Paulo, Brazil (M.C. Nascimento, L.M. Sumita, V.U. Souza, J. Oliveira, M. Mascheretti, M. Quiroga, R.A.R. Vela, E. Sabino, C.S. Pannuti); London School of Hygiene and Tropical Medicine, London, UK (M.C. Nascimento, H.A. Weiss, P. Mayaud)

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Table 2

Multivariable analysis of risk factors for KSHV infection among 3 populations in the Brazilian Amazon*

Variables aOR (95% CI)
Mapuera Amerindians, n = 339 Mapuera non-Amerindians, n = 181 Manaus blood donors, n = 1,133
Sex
Male 1 1 1
Female 1.2 (0.7–2.2) 1.0 (0.5–2.1) 1.3 (1.0–1.7)
p value
0.5
0.9
0.08
Age group, y
0–9 0.1 (0.05–0.4) 0.1 (0.04–0.3)
10–17 0.2 (0.07–0.4) 0.3 (0.1–0.7)
18–34 0.5 (0.2–1.2) 0.4 (0.1–0.9) 0.9 (0.7–1.3)
>35 1 1 1
p value
<0.001
<0.001
0.6
HSV-2
Negative 1 1 1
Positive 0.3 (0.1–0.9) 2.7 (1.2–6.5) 1.3 (1.0–1.6)
p value 0.03 0.02 0.09

*Seroreactivity by any serologic assay (whole virus ELISA, IFA-LANA, or IFA-lytic) in multivariable analysis. KSHV, Kaposi sarcoma–associated herpesvirus; IFA-LANA, immunofluorescence assay that detected latent-associated nuclear antigens; IFA-lytic, IFA that detected lytic-associated nuclear antigens; aOR, age- and sex-adjusted odds ratio; CI, confidence interval; HSV-2, herpes simplex virus type-2.

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