Table 3.
Characteristic | No. (%) |
---|---|
Age, y, median (range) |
19 (17–22) |
Sex | |
Male |
35 (52) |
Female |
32 (48) |
Vital signs and physical exam findings (on any visit during illness) | |
Fever (≥100.0 °F [37.8 °C]) |
38 (57) |
Respiratory rate, breaths/min, median (range)a |
16 (14–22) |
Oxygen saturation, %, median (range)b |
97 (95–100) |
Tachycardiac |
25 (37) |
Cervical lymphadenopathy |
35 (52) |
Pharyngitis/tonsillitis |
45 (67) |
Exudative |
16 (36) |
Abnormal lung auscultationd |
5 (7) |
Chest radiograph performed |
17 (25) |
Normal |
13 (76) |
Single lobar consolidation |
3 (18) |
Bilateral interstitial infiltrate |
1 (6) |
Additional positive diagnostic tests (on any visit during illness) | |
Respiratory codetections | |
Rhinovirus/enterovirus |
6 (9) |
Chlamydia pneumoniae |
2 (3) |
Influenza A |
1 (1) |
Human coronavirus |
1 (1) |
Rapid group A streptococcus test or throat culture |
4 (6) |
Mononucleosis spot test |
1 (1) |
Visit diagnosis (on any visit during illness)e | |
Influenza-like illness/syndrome |
41 (61) |
Pharyngitis/tonsillitis |
25 (37) |
Fever |
21 (31) |
Sore throat |
18 (27) |
Upper respiratory infection/respiratory illness |
16 (24) |
Cough |
8 (12) |
No. of outpatient or emergency department visits, median (range) |
2 (1–5) |
1 |
33 (49) |
2 |
19 (28) |
≥ 3 |
15 (22) |
Data are presented as no. (%) unless otherwise indicated.
aIncludes some participants with multiple measurements: n = 25 across 30 outpatient visits.
bIncludes some participants with multiple measurements: n = 35 across 61 outpatient visits.
cDefined as measured heart rate > 100 beats per minute or noted on the physical examination.
dIncludes rhonchi/coarse breath sounds, wheezing, rales/crackles, and decreased breath sounds.
eVisit diagnoses accounting for < 10% included adenovirus, pneumonia, influenza, asthma, cervical lymphadenopathy, mononucleosis, sinusitis, gastroenteritis, nausea, vomiting, malaise, viral syndrome/viral illness/viral infection, shortness of breath, infectious disease exposure, bronchitis, bronchospasm, posttussive emesis, nasal congestion, body aches, nonintractable headache, vasovagal syncope, orthostatic hypertension, diarrhea, coronavirus infection, and muscle pain.