Table 1 Annual incidence of
pneumococcal disease by healthcare and age group Year Outpatient incidencea Inpatient incidenceb Totalc 50–64 years ≥65 years Totalc 50–64 years ≥65 years Serious diseased Invasive diseasee 2002 5.8 2.4 3.4 262.3 105.5 156.8 235.3 78.1 2003 6.0 2.5 3.4 288.5 116.2 172.2 254.8 97.0 2004 5.9 2.5 3.4 270.4 116.9 153.5 234.5 88.9 2005 6.0 2.7 3.3 280.6 124.7 155.9 240.0 88.6 2006 6.0 2.7 3.3 278.1 136.1 141.9 240.6 91.0 2007 5.9 2.7 3.2 277.7 135.5 142.2 230.1 87.5 2008 5.6 2.6 3.0 309.9 147.1 162.8 264.0 PP2 datasheet 97.7 2009 4.9 2.2 2.7 307.4 148.7 158.7 258.5 91.6 2010 4.0 1.8 2.2 305.4 144.3 161.1 253.4 92.6 2011 2.9 1.3 1.6 328.1 154.5 173.5 264.7 94.6 Annualized percent change (%) −3.5 −4.1 −3.1 0.2 −0.6 0.7 0.1 −1.0 P value <0.001 0.001 0.003 0.846 0.391 0.533 0.888 0.454 Incidence based on all positive Streptococcus selleck kinase inhibitor pneumoniae cultures from any site, unless otherwise indicated aNumber of infections per 100,000 clinic visits bNumber of infections per 100,000 hospital visits cIncludes all patients aged ≥50 years dIncludes only serious pneumococcal infections (pneumonia, bacteremia, and meningitis) eIncludes only
invasive pneumococcal disease (bacteremia, meningitis, and bacteremic pneumonia) There were 14,511 unique episodes of serious (bacteremia, meningitis, and pneumonia) S. pneumoniae infections over the study period (Table 2). Non-invasive pneumonia was the most common infection (63.4%, n = 9,193), followed by selleck chemicals bacteremia (25.7%, n = 3,735), bacteremic pneumonia (10.5%, n = 1,529), bacteremia and meningitis (0.2%, n = 23), and meningitis alone (0.1%, n = 21). The overall mean age of this population was 67.7 ± 10.6 years. The majority of patients were white males from facilities in the South for all infection types. The most common
treating specialty was general medicine (57.5%, n = 8,351), followed by intensive care (25.9%, n = 3,758). Table 2 Population demographics, comorbid conditions, and healthcare exposures of hospitalized patients with serious pneumococcal infections by infection type selleck chemicals llc Variable Totala (n = 14,511) Pneumoniab (n = 9,193) Bacteremic pneumonia (n = 1,529) Bacteremia (n = 3,735) Meningitisc (n = 44) Invasive diseased (n = 5,318) Age (years), mean (SD) 67.7 (10.6) 67.9 (10.3) 66.9 (10.5) 67.4 (11.2) 67.7 (10.6) 67.2 (11.0) Male gender 14,237 (98.1) 9,042 (98.4) 1,507 (98.6) 3,637 (97.4) 41 (93.2) 5,195 (97.7) White race 11,526 (79.4) 7,607 (82.7) 1,167 (76.3) 2,716 (72.7) 28 (63.6) 3,919 (73.7) Region of facility Midwest 3,430 (23.6) 2,297 (25.0) 326 (21.3) 798 (21.4) 7 (15.9) 1,133 (21.3) Northeast 2,206 (15.2) 1,510 (16.4) 238 (15.6) 455 (12.2) <5 696 (13.1) South 5,414 (37.3) 3,107 (33.8) 633 (41.4) 1,639 (43.9) 29 (65.9) 2,307 (43.