TABLE 1

Reported Numbers of Varicella Cases and Incidence Rates (Per 1000 Population) by Age Group, AV (CA) and WP (PA), 1995 and 2006–2010

Age, y199520062007200820092010Percentage Change
nRatenRatenRatenRatenRatenRate2010 vs 19952010 vs 2006
AV
 <113419.7203.4122.0111.7121.940.6−96.7***−81.3**
 1–4112748.8421.9401.7321.3351.4230.9−98.2***−54.0**
 5–9122854.91646.31094.3702.8421.6200.7−98.7***−88.3***
 10–1423510.81213.7953.1732.4541.9240.9−91.5***−75.3***
 15–19653.1220.7190.5180.5160.5150.5−84.9***−29.3a
 ≥201450.8250.1200.1130.1180.1140.1−92.9***−50.0*
 Overall293410.33941.12950.82170.61770.51000.3−97.4***−76.3***
WP
 <1388.820.541.151.341.030.7−91.6***40.8a
 1–435820.8312.0231.5221.4130.890.6−97.3***−72.7**
 5–953427.3271.5281.6160.970.460.3−98.8***−78.7**
 10–141628.9251.3110.680.480.420.1−98.8***−91.4**
 15–19391.950.2100.430.160.240.1−92.4***−25.1a
 ≥20600.3120.1170.1210.130.0100.1−81.3***−17.3a
 Overall11974.11020.4930.4750.3410.2340.1−97.0***−67.1***
  • a Nonsignificant (P ≥ .05).

  • * P < .05.

  • ** P < .01.

  • *** P < .001.