Erratum to: Infection DOI 10.1007/s15010-011-0241-2

The correct affiliations of authors A. Gjelsvik and E. Feller are given below.

The author name S. Rosenthal should read S. R. Rosenthal.

A. Gjelsvik

Program in Public Health, Brown University, 121 South Main St. S121-2, Providence, RI 02912, USA

e-mail: annie_gjelsvik@brown.edu

E. Feller

Department of Medicine, Alpert Medical School, Brown University, 121 South Main St. S121-2, Providence, RI 02912, USA

e-mail: Edward_feller@brown.edu