Chlamydia trachomatis reported among U.S. active duty service members, 2000-2008.

OBJECTIVES: To review reported chlamydia infection trends in the U.S. military and identify reasons for differences. METHODS: Defense Medical Surveillance System 2000-2008 reports for nondeployed, active duty members were studied. Incidence, rate ratios, and confidence intervals were generated. Age- and gender-specific rates were compared with US national rates. Screening and reporting policies and procedures were reviewed. RESULTS: Overall incidence was 922 cases per 100,000 person-years, with considerable service variability (392-1,431 cases per 100,000 person-years in the Navy and Army, respectively). Navy-Marine Corps rates increased more than 2 fold in 2008. Rates were higher among women, minorities, and members under 25 years. Military rates exceeded national rates. CONCLUSIONS: The 2008 increase in Navy-Marine Corps rates may be due to the implementation of web-based reporting. Demographic differences were consistent with published reports. The civilian-military disparity may reflect higher percentages of military at-risk women screened.

Spread of adenovirus to geographically dispersed military installations, May-October 2007.

In mid-May 2007, a respiratory disease outbreak associated with adenovirus, serotype B14 (Ad14), was recognized at a large military basic training facility in Texas. The affected population was highly mobile; after the 6-week basic training course, trainees immediately dispersed to advanced training sites worldwide. Accordingly, enhanced surveillance and control efforts were instituted at sites receiving the most trainees. Specimens from patients with pneumonia or febrile respiratory illness were tested for respiratory pathogens by using cultures and reverse transcription-PCR. During May through October 2007, a total of 959 specimens were collected from 21 sites; 43.1% were adenovirus positive; the Ad14 serotype accounted for 95.3% of adenovirus isolates. Ad14 was identified at 8 sites in California, Florida, Mississippi, Texas, and South Korea. Ad14 spread readily to secondary sites after the initial outbreak. Military and civilian planners must consider how best to control the spread of infectious respiratory diseases in highly mobile populations traveling between diverse geographic locations.