Table 1.
PCSA population: projected rates of cough illness/ ICD-9 pertussis and actual laboratory tests
| 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 %) |
PCSA Primary Census Statistical Area
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)
bICD-9 codes: 033.0, 033.9, 484.3
cFor more information on the incidence calculation and the descriptive analysis of the database please refer to the McGuiness et al. (2013) publication [22]
dData were only collected for 9 months during 2006 (April to December)