Table 2.
Characteristics of patients with laboratory-confirmed pertussis, M. pneumoniae, C. pneumoniae, viruses and mixed-pertussis infection with other pathogens
| Characteristics | Pertussis | M. pneumoniae | C. pneumoniae | Viruses | Mixed-pertussis infection* |
|---|---|---|---|---|---|
| Number |
183 |
105 |
93 |
52 |
10 |
| Age mean (range), years |
39.1 (16–77) |
35.2 (16–46) |
36.4 (18–52) |
39.4 (24–76) |
39.7 (27–65) |
| Male : Female |
73 : 110 |
49 : 56 |
45 : 48 |
25 : 27 |
5 : 5 |
| Symptom** |
|
|
|
|
|
| Paroxysmal cough |
165 (90.1) |
89 (84.7) |
68 (73.1)*** |
24 (46.1)*** |
100 (100.0) |
| Awakened by cough |
133 (72.6) |
84 (80.0) |
66 (70.9) |
29 (55.7)*** |
9 (90.0) |
| Sputum production |
67 (36.6) |
40 (38.0) |
30 (32.2) |
17 (32.6) |
5 (50.0) |
| Chest pain |
66 (36.0) |
38 (36.1) |
25 (26.8) |
12 (23.0) |
3 (30.0) |
| Dyspnea |
56 (30.6) |
30 (28.5) |
21 (22.5) |
6 (11.5)*** |
4 (40.0) |
| Posttussive vomiting |
46 (25.1) |
20 (19.0) |
15 (16.1) |
0 *** |
2 (20.0) |
| Posttussive gagging |
90 (49.1) |
32 (30.4)*** |
22 (23.6)*** |
6 (11.5)*** |
6 (60.0) |
| Inspiratory whoop |
36 (19.6) |
11 (10.4)*** |
10 (10.7)*** |
0*** |
1 (10.0) |
| History of fever (≥37.0°C) |
27 (14.7) |
35 (33.3)*** |
8 (8.6) |
19 (36.5)*** |
50 (50.0)*** |
| Upper respiratory tract infection symptoms before cough |
83 (45.3) |
55 (52.3) |
37 (39.7) |
45 (86.5)*** |
8 (80.0)*** |
| Exposed to cough by family member or work/school colleague** |
97 (53.0) |
49 (46.6) |
40 (43.0) |
26 (50.0) |
60 (60.0) |
| Hospitalization** |
1 (0.5) |
1 (0.9) |
0 |
0 |
1 (10.0) |
| Laboratory data |
|
|
|
|
|
| WBC mean number ± SD, /mm3 |
6,619 ± 2,815 |
6,249 ± 2,731 |
6,972 ± 2,618 |
6,314 ± 2,765 |
6,898 ± 2,265 |
| Lymphocyte mean number ± SD, /mm3 | 2,043 ± 892 | 1,986 ± 878 | 2,361 ± 958 | 2,419 ± 954 | 2,133 ± 854 |
* Mixed-pertussis infection with other pathogens: Chlamydophila pneumoniae (one case), Mycoplasma pneumoniae (one case), Streptococcus pneumoniae (one cases), Moraxella catarrhalis (one case) and viruses (six cases).
** Data represent the numbers (%) of patients.
*** When compared to patients with laboratory-confirmed pertussis, the differences were significant (p-value indicate <0.05).