Volume 18, Number 9—September 2012
Research
Trends in Meningococcal Disease in the United States Military, 1971–2010
, Dennis J. Faix, Christian J. Hansen, and Patrick J. Blair
Table 2
Cases of meningococcal disease (n = 26), by Neisseria meningitidis serogroup, within demographic and clinical categories, United States military, 2006–2010*
| Characteristic |
N. meningitidis serogroup, no. (%) cases
|
% Cases | % Total population | Incidence | ||||
|---|---|---|---|---|---|---|---|---|
| B | C | Y | Unknown | Total | ||||
| Total | 6 (23) | 7 (27) | 9 (35) | 4 (15) | 26 | |||
| Year of illness | ||||||||
|
2006 |
0 | 4 | 0 | 2 | 6 | 23 | 20 | 0.440 |
|
2007 |
2 | 1 | 1 | 1 | 5 | 19 | 20 | 0.367 |
|
2008 |
3 | 0 | 4 | 1 | 8 | 31 | 20 | 0.581 |
|
2009 |
1 | 0 | 1 | 0 | 2 | 8 | 20 | 0.142 |
|
2010 |
0 | 2 | 3 | 0 | 5 | 19 | 20 | 0.354 |
| Death | ||||||||
|
Yes |
2 | 2 | 1 | 0 | 5 | 19 | ||
|
No |
4 | 5 | 8 | 4 | 21 | 81 | ||
| Age range, y | ||||||||
|
17–19 |
2 | 3 | 4 | 2 | 11 | 42 | 7 | 2.343 |
|
20–24 |
1 | 3 | 5 | 1 | 10 | 38 | 33 | 0.434 |
|
25–29 |
1 | 1 | 0 | 1 | 3 | 12 | 23 | 0.188 |
|
30–34 |
0 | 0 | 0 | 0 | 0 | 0 | 14 | 0.000 |
|
35–39 |
2 | 0 | 0 | 0 | 2 | 8 | 12 | 0.250 |
|
>40 |
0 | 0 | 0 | 0 | 0 | 0 | 10 | 0.000 |
| Clinical syndrome | ||||||||
|
Meningitis alone |
2 | 4 | 1 | 4 | 11 | 42 | ||
|
Sepsis alone |
3 | 1 | 4 | 0 | 8 | 31 | ||
|
Both |
1 | 2 | 4 | 0 | 7 | 27 | ||
| Vaccine type | ||||||||
|
Conjugate |
3 | 2 | 4 | 1 | 10 | 38 | ||
|
Polysaccharide |
3 | 4 | 4 | 2 | 13 | 50 | ||
|
Unknown |
0 | 1 | 1 | 1 | 3 | 12 | ||
| Years from vaccination to illness | ||||||||
|
<1 |
NA | 6 | 7 | 0 | 13 | 81 | ||
|
1–2 |
NA | 1 | 1 | 0 | 2 | 13 | ||
|
2–3 |
NA | 0 | 0 | 0 | 0 | 0 | ||
|
>3 |
NA | 0 | 1 | 0 | 1 | 6 | ||
| Military branch | ||||||||
|
Air Force |
1 | 1 | 0 | 0 | 2 | 8 | 23 | 0.120 |
|
Army |
2 | 3 | 0 | 0 | 5 | 19 | 37 | 0.189 |
|
Coast Guard |
1 | 0 | 0 | 0 | 1 | 4 | 3 | 0.509 |
|
Marine Corps |
2 | 3 | 5 | 3 | 13 | 50 | 14 | 1.353 |
|
Navy |
0 | 0 | 4 | 1 | 5 | 19 | 23 | 0.302 |
| Location | ||||||||
|
Continental United States |
4 | 5 | 8 | 3 | 20 | 77 | 71 | 0.418 |
|
Outside continental United States |
2 | 2 | 1 | 1 | 6 | 23 | 29 | 0.310 |
| Race/ethnicity | ||||||||
|
Asian |
1 | 0 | 0 | 0 | 1 | 4 | 4 | 0.328 |
|
Black |
0 | 3 | 3 | 0 | 6 | 23 | 18 | 0.472 |
|
Hispanic/Latino |
0 | 0 | 1 | 0 | 1 | 4 | 12 | 0.123 |
|
White |
3 | 4 | 5 | 4 | 16 | 62 | 61 | 0.367 |
|
Native American/Alaskan |
0 | 0 | 0 | 0 | 0 | 0 | 2 | 0.000 |
|
Unknown |
2 | 0 | 0 | 0 | 2 | 8 | 3 | |
| Sex | ||||||||
|
F |
2 | 1 | 1 | 0 | 4 | 15 | 14 | 0.401 |
|
M |
4 | 6 | 8 | 4 | 22 | 85 | 86 | 0.359 |
| Military rank | ||||||||
|
Recruit |
2 | 1 | 4 | 2 | 9 | 35 | 12 | 1.057 |
|
Enlisted |
4 | 6 | 5 | 2 | 17 | 65 | 73 | 0.330 |
|
Officer |
0 | 0 | 0 | 0 | 0 | 0 | 15 | 0.000 |
*Exact denominators are not available in all categories. Percentage values may not equal 100 because of rounding. Boldface indicates that incidence for the category is significantly different from the incidence in the remaining population (Poisson p<0.05). NA, not applicable (no serogroup B vaccine).