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Table 1 PCSA population: projected rates of cough illness/ ICD-9 pertussis and actual laboratory tests

From: The estimated incidence of pertussis in people aged 50 years old in the United States, 2006–2010

Year PCSA population Cough illnessa ICD-9 pertussisb Incidence of medically reported pertussis per 100,000c Lab tests total (% positive)
50-64 y ≥65 y 50-64 y ≥65 y 50-64 y ≥65 y 50-64 y ≥65 y 50-64 ≥65 y
2006d 47,692,685 34,408,408 2,420,259 3,410,356 1580 1064 3.0 2.9 2694 (36.2 %) 1415 (29.1 %)
2007 49,339,902 34,949,825 3,631,552 4,954,117 1332 1020 2.5 2.7 4121 (33.3 %) 2007 (27.9 %)
2008 50,995,966 35,448,456 4,422,844 5,981,570 1176 1285 2.1 3.3 4382 (37.6 %) 2103 (29.7 %)
2009 52,378,740 36,335,561 4,980,846 6,388,537 1957 1209 3.5 3.1 4832 (38.7 %) 2631 (35.4 %)
2010 53,604,318 37,372,356 5,256,210 6,763,574 2719 1790 4.6 4.4 6621 (38.2 %) 4141 (36.2 %)
Total 254,011,611 178,514,606 20,711,712 27,498,154 8764 6368 3.15 3.27 22,650 (37.1 %) 12,297 (32.8 %)
  1. PCSA Primary Census Statistical Area
  2. aICD-9 codes: 033.0 (pertussis/whooping cough due to B. pertussis), 033.9 (pertussis/whooping cough due to unspecified organism), 484.3 (pneumonia in whooping cough), 786.2 (cough), 466.0 (acute bronchitis)
  3. bICD-9 codes: 033.0, 033.9, 484.3
  4. cFor more information on the incidence calculation and the descriptive analysis of the database please refer to the McGuiness et al. (2013) publication [22]
  5. dData were only collected for 9 months during 2006 (April to December)