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Table 1 Characteristics and symptoms of Alpha and Hotel Company trainees, battalion training staff, and incoming trainees (N = 713)

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

Characteristic Alpha Company Hotel Company Training Staff Incoming Alpha
  n = 301 n = 232 n = 131 n = 49
Median age (years) 22 22 37 22
Male 290 [96%] 213 [92%] 126 [96%] 49 [100%]
Underlying medical condition 6 [2%] 14 [6%] 21 [16%] 1 [2%]
Smoking status     
   Smoked > 100 cigarettes in lifetime 185 [61%] 146 [63%] 75 [57%] 38 [78%]
   Currently smoke 163 [54%] 72 [31%] 50 [38%] 13 [27%]
Living quarters     
   Bay (> 4 trainees per room) 209 [69%] 148 [64%] N/A N/A
   Smaller room (2-4 trainees per room) 90 [30%] 86 [37%] N/A N/A
Received 2008-09 influenza vaccine a,b 271/276 [98%] 216/219 [99%] 92/122 [75%] 36/38 [95%]
Received pneumococcal vaccine c 18 [6%] 10 [4%] 3 [2%] 6 [12%]
Symptoms February 1-19, 2009     
   At least 1 symptomd 247 [82%] 183 [79%] 77 [59%] 23 [47%]
   Cough 211 [70%] 156 [67%] 53 [40%] 12 [24%]
   Runny Nose 195 [65%] 153 [66%] 53 [40%] 18 [37%]
   Sore Throat 125 [42%] 82 [35%] 38 [29%] 7 [14%]
   Fever 61 [20%] 45 [19%] 17 [13%] 2 [4%]
   Chills 53 [18%] 39 [17%] 9 [7%] 0
Received antibiotics February 1-19, 2009 87 [29%] 62 [27%] 18 [14%] 5 [10%]
  1. aAn individual was considered vaccinated against influenza for the current season if the individual received the 2008-09
  2. influenza vaccine > 14 days prior to participation in the cohort investigation
  3. bOf individuals who reported knowing their influenza vaccination status for the current season
  4. cSelf-reported history of receipt of pneumococcal vaccine
  5. dOf the following symptoms: fever, chills, cough with or without sputum, difficulty breathing, wheezing, runny nose, sore throat, or ear pain