Nasopharyngeal Pneumococcal Density and Evolution of Acute Respiratory Illnesses in Young Children, Peru, 2009–2011
Roger R. Fan, Leigh M. Howard, Marie R. Griffin, Kathryn M. Edwards, Yuwei Zhu, John V. Williams, Jorge E. Vidal, Keith P. Klugman, Ana I. Gil, Claudio F. Lanata, and Carlos G. Grijalva
Author affiliations: Vanderbilt University, Nashville, Tennessee, USA (R.R. Fan, L.M. Howard, M.R. Griffin, K.M. Edwards, Y. Zhu, C.F. Lanata, C.G. Grijalva); University of Pittsburgh, Pittsburgh, Pennsylvania, USA (J.V. Williams); Emory University, Atlanta, Georgia, USA (J.E. Vidal, K.P. Klugman); Instituto de Investigacion Nutricional, Lima, Peru (A.I. Gil, C.F. Lanata)
Figure 1. Estimated median pneumococcal densities with 95% CIs (vertical bars) by acute respiratory illness (ARI) period. Estimates derived from a quantile regression model that accounted for sex, age, daycare attendance, electricity, water supply, housing materials, kitchen type, smokers at home, vaccination, antimicrobial drug use, season, and altitude of residence. Asterisk indicates significantly different from ARI samples; dagger indicates significantly different from non-ARI samples.
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