Accession Number:

ADA544090

Title:

Outbreak of Pneumonia in the Setting of Fatal Pneumococcal Meningitis among US Army Trainees: Potential Role of Chlamydia pneumoniae Infection

Descriptive Note:

Journal article

Corporate Author:

ARMY CENTER FOR HEALTH PROMOTION AND PREVENTIVE MEDICINE ABERDEEN PROVING GROUND MD

Report Date:

2011-06-02

Pagination or Media Count:

30.0

Abstract:

Background Compared to the civilian population, military trainees are often at increased risk for respiratory infections. We investigated an outbreak of radiologically confirmed pneumonia that was recognized after 2 fatal cases of serotype 7F pneumococcal meningitis were reported in a 303-person military trainee company Alpha Company. Methods We reviewed surveillance data on pneumonia and febrile respiratory illness at the training facility conducted chart reviews for cases of radiologically-confirmed pneumonia and administered surveys and collected nasopharyngeal swabs from trainees in the outbreak battalion Alpha and Hotel Companies, associated training staff, and trainees newly joining the battalion. Results Among Alpha and Hotel Company trainees, the average weekly attack rates of radiologically-confirmed pneumonia were 1.4 and 1.2 most other companies at FLW 0-0.4. The pneumococcal carriage rate among all Alpha Company trainees was 15 with a predominance of serotypes 7F and 3. Chlamydia pneumoniae was identified from 31 of specimens collected from Alpha Company trainees with respiratory symptoms. Conclusion Although the etiology of the outbreak remains unclear, the identification of both S. pneumoniae and C. pneumoniae among trainees suggests that both pathogens may have contributed either independently or as cofactors to the observed increased incidence of pneumonia in the outbreak battalion and should be considered as possible etiologies in outbreaks of pneumonia in the military population.

Subject Categories:

  • Medicine and Medical Research
  • Military Forces and Organizations

Distribution Statement:

APPROVED FOR PUBLIC RELEASE