Table 3.
Frequency of symptoms among cases of Q fever as reported through case report forms, by reporting category, 2000–2012*
| Symptom | Q fever, 2000–2007 | Acute Q fever, 2008–2012 | Chronic Q fever, 2008–2012 | Q fever, 2000–2012 |
|---|---|---|---|---|
| Fever | 154 (91.1%) | 205 (100%) | 70 (70%) | 429 (94.9%) |
| Malaise | 120 (71%) | 142 (69.3%) | 55 (55%) | 317 (70.1%) |
| Headache | 90 (53.3%) | 147 (71.7%) | 36 (36%) | 273 (60.4%) |
| Myalgia | 83 (49.1%) | 105 (51.2%) | 39 (39%) | 227 (50.2%) |
| Cough | 52 (30.8%) | 75 (36.6%) | 38 (38%) | 165 (36.5%) |
| Chills | 26 (15.4%) | 72 (35.1%) | 14 (14%) | 112 (24.8%) |
| Pneumonia | 25 (14.8%) | 25 (12.2%) | 38 (38%) | 88 (19.5%) |
| Endocarditis | 34 (20.1%) | 5 (2.4%) | 35 (35%) | 74 (16.4%) |
| Sweats | 18 (10.7%) | 46 (22.4%) | 10 (10%) | 74 (16.4%) |
| Retro orbital pain | 11 (6.5%) | 41 (20%) | 14 (14%) | 66 (14.6%) |
| Rash | 26 (15.4%) | 22 (10.7%) | 11 (11%) | 59 (13.1%) |
| Hepatitis | 15 (8.9%) | 18 (8.8%) | 24 (24%) | 57 (12.6%) |
| Anorexia | 18 (10.7%) | 25 (12.2%) | 11 (11%) | 54 (11.9%) |
| Fatigue | 3 (1.8%) | 23 (11.2%) | 10 (10%) | 36 (8%) |
| Nausea | 5 (3%) | 18 (8.8%) | 7 (7%) | 30 (6.6%) |
| Hepatomegaly | 8 (4.7%) | 15 (7.3%) | 4 (4%) | 27 (6%) |
| Weakness | 10 (5.9%) | 14 (6.8%) | 2 (2%) | 26 (5.8%) |
| Vomiting | 3 (1.8%) | 13 (6.3%) | 6 (6%) | 22 (4.9%) |
| Splenomegaly | 9 (5.3%) | 8 (3.9%) | 4 (4%) | 21 (4.6%) |
| Arthralgia | 8 (4.7%) | 9 (4.4%) | 3 (3%) | 20 (4.4%) |
| Diarrhea | 1 (0.6%) | 12 (5.9%) | 6 (6%) | 19 (4.2%) |
| Elevated liver enzymes | 4 (2.4%) | 14 (6.8%) | 18 (4%) | |
| Shortness of breath | 1 (0.6%) | 9 (4.4%) | 5 (5%) | 15 (3.3%) |
| Abdominal pain | 4 (2.4%) | 4 (2%) | 5 (5%) | 13 (2.9%) |
| Altered mental status | 7 (3.4%) | 4 (4%) | 11 (2.4%) |
*
Only categories with at least 11 reports are presented here.