Table 6.
Characteristics of measles outbreaks in secondary schools
| 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 |
HS High School; SHS Senior High School; SBS Senior Boarding School; NR Not ffig Reported.
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%)