Increase in Pilus Islet 2–encoded Pili among Streptococcus pneumoniae Isolates, Atlanta, Georgia, USA
Dorothea Zähner , Aditya Gudlavalleti, and David S. Stephens
Author affiliations: Emory University School of Medicine, Atlanta, Georgia, USA (D. Zähner, A. Gudlavalleti, D.S. Stephens); Department of Veterans Affairs Medical Center, Atlanta (D. Zähner, D.S. Stephens)
Figure 2. Percentage of pilus islet 2 (PI-2)–containing Streptococcus pneumoniae invasive isolates among serotypes associated with PI-2 in metropolitan Atlanta, Georgia, USA, 1999 and 2006. The total number of isolates for each serotype is shown at the top of the column. *Significant difference between 1999 and 2006 19A isolates (p<0.005).
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