Volume 12, Number 6—June 2006
Research
Human Streptococcus suis Outbreak, Sichuan, China
Table 3
Symptoms and signs | STSS, no. (%) (n = 61) | Non-STSS, no. (%) n = 154) | Total, no. (%) (N = 215) |
---|---|---|---|
Fever (temperature >37.3°C) | 61 (100) | 154 (100) | 215 (100) |
Chills | 48 (79) | 128 (83) | 176 (82) |
Headache | 38 (62) | 110 (71) | 148 (69) |
Myalgia | 30 (49) | 73 (47) | 103 (48) |
Vomiting | 41 (67) | 80 (52) | 121 (56) |
Abdominal pain | 24 (39) | 33 (21) | 57 (27) |
Diarrhea | 28 (46) | 22 (14) | 50 (23) |
Coma | 16 (26) | 26 (17) | 42 (20) |
Petechiae, ecchymosis† | 37 (61) | 12 (8) | 49 (23) |
Neck rigidity | 4 (7) | 50 (32) | 54 (25) |
Kernig positive | 1 (2) | 27 (18) | 28 (13) |
Brudzinski positive | 2 (3) | 17 (11) | 19 (9) |
Hypotension (blood pressure <90 mm Hg)†‡ | 25 (93) | 2 (9) | 27 (55) |
*STSS, streptococcal toxic shock syndrome. Median duration between exposure and onset (range) was 1.6 d (9 h–9 d) for STSS, 2.5 d (6 h–14 d) for non-STSS, and 2.2 d (3 h–14 d) for total sample. Difference between median incubation periods of STSS and non-STSS, p<0.05, rank sum test.
†Difference in frequency between STSS and non-STSS, p<0.001, χ2.
‡Not conducted in every patient.
1These authors contributed equally to this article.
2Members of the Chinese Center for Disease Control and Prevention Streptococcus suis study group are Wenjun Zhong, Ling Meng, Yongjun Gao, Huamao Du, Changyu Ye, Zhigang Cui, Shouyin Zhang, and Dong Jin. Members of the Sichuan Center for Disease Control and Prevention Streptococcus suis study group are Li Liu, Heng Yuan, Bin Ouyang, Qiang Lv, Yan Huang, Ting Huang, Xingyu Zhou, Liao Feng, and Qidi Pang.