Table 1.

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

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 vaccinea,b	271/276 [98%]	216/219 [99%]	92/122 [75%]	36/38 [95%]
Received pneumococcal vaccinec	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%]

^aAn individual was considered vaccinated against influenza for the current season if the individual received the 2008-09

influenza vaccine > 14 days prior to participation in the cohort investigation

^bOf individuals who reported knowing their influenza vaccination status for the current season

^cSelf-reported history of receipt of pneumococcal vaccine

^dOf the following symptoms: fever, chills, cough with or without sputum, difficulty breathing, wheezing, runny nose, sore throat, or ear pain