Skip to main content

Table 6 Characteristics of measles outbreaks in secondary schools

From: Estimating the nationwide transmission risk of measles in US schools and impacts of vaccination and supplemental infection control strategies

School Location [outbreak year] – Type NO. Students No Vac. Record 1-Dose Vaccination 2-Dose Vaccination ARU ARI-1- Dose ARI-2- Dose ARI, General Susceptible Students NO. First Gen. Cases Total NO. Cases
Massachusetts, US [1984] SHS [59] 2098 0.6% 42.3% 57.1% 22.9% 1.7% 0.5% 1.0% 117 5 24
Texas, US [1985] HS [103] 1796 0.6% 87.6% 11.9% 10.0% 4.5% 1.4% 4.1% 99 3 5
Illinois, US [1985] HS [22] 1873 0.3% 71.1% 28.9% 0.0% 4.5% 1.7% 3.7% 100 69 69
New Mexico, US [1987] HS [110] 2012 1.9% 76.5% 21.6% 0.0% 2.8% 1.7% 2.6% 137 24 49
Texas, US [1989] HS [111] 2243 0.0% 95.2% 4.8% N/A 3.2% 1.9% 3.2% 112 58 71
Honkajoki, Finland [1989] HS [112] 144 63.8% 29.5% 6.7% 22.4% 29.0%a 14.3%a 26.3%a 69 22 25
Gwynedd, North Wales [1991] SHS [113] 723 38.5% NR NR 33.1% NR NR 1.0% 140 12 45
Alaska, US [1996] HS [61, 105] 127 <  1% 45.0% 44.0% NR NR NR <  3.94% 7 3 5
Alaska, US [1996] HS I [114] 2192 0.0% 48.8% 50.4% 0.0% 1.5% 0.0% 0.7% 110 16 17
Alaska, US [1996] HS II [114] 1486 0.5% 53.9% 45.5% 0.0% 0.1% 0.3% 0.1% 81 NR 2
Pennsylvania, US [2003] SBS [115] 663 0.5% 3.9% 94.9% 66.7% 0.0% 1.0% 0.9% 36 5 8
Quebec, Canada [2011] HS [116] 1306 4.7% 9.0% 85.5% 82.0% 4.6% 3.7% 4.7% 123 10 110
  1. HS High School; SHS Senior High School; SBS Senior Boarding School; NR Not ffig Reported.
  2. a Only extreme measles outbreak where ARIs were larger than assumed measles susceptibility rate of students between 14 and 18 years old with either 1-dose or 2-dose vaccination (i.e. 5%)