TABLE 3

Population-level Age-specific Mumps ARs in the Village, Orange County, New York, 2009–2010a

Age Group, yPreintervention Periodb (21 d)Postintervention Phase 1c (21 d)Postintervention Phase 2d (21 d)Relative % Decline
No. of Mumps CasesPopulation at RiskAge-specific AR, %No. of Mumps CasesPopulation at RiskAge-specific AR, %No. of Mumps CasesPopulation at RiskAge-specific AR, %
All17219 9930.868719 7170.444119 6300.2175.6 (66.0 to 83.0)
<5745920.151145750.24545640.1126.7 (−126.0 to 77.0)
5–106043161.404042200.951641800.3872.9 (52.0 to 84.0)
11–177832102.40830910.26330830.1096.0 (87.0 to 99.0)
18–241723550.72723330.30823260.3452.8 (−11.0 to 79.0)
≥251055210.182154990.38954780.1611.1 (−123 to 63.0)
  • a Mumps cases reported to the OCHD and population for the village based on the 2010 population census by the US Census Bureau.

  • b Preintervention period: 21 days before the third dose MMR vaccine intervention period.

  • c Postintervention phase 1: 21 days after the intervention, that is, day +1 to day +21.

  • d Postintervention phase 2: 21 days after the intervention period, that is, day +22 to day +42.