Clinical Manifestations and Risk Factors of Streptococcus suis Mortality Among Northern Thai Population: Retrospective 13-Year Cohort Study

• Published in: Infection and drug resistance 2019-12, Vol.12, p.3955-3965
• Main Authors: Rayanakorn, Ajaree, Katip, Wasan, Goh, Bey Hing, Oberdorfer, Peninnah, Lee, Learn Han
• Format: Article
• Language: English
• Subjects: Bacteremia; Bilirubin; Cardiovascular disease; Cohort analysis; Data collection; Diabetes; Drinking (Alcoholic beverages); Drinking behavior; Endocarditis; Epidemiology; Family medical history; Food habits; Hogs; Hospitals; Infection; Infections; Infective endocarditis; Ionization; Laboratories; Liver diseases; Malaysia; Medical research; Meningitis; Microbiology; Mortality; Multivariate analysis; Original Research; Patients; Population studies; Pork; risk factor; Risk factors; s. suis infection; s.suis; Sepsis; Septic shock; Septicemia; Shock; Southeast Asia; Streptococcus infections; Streptococcus suis; Studies; Swine; Thailand; Vegetation; Zoonoses
• ISSN: 1178-6973; 1178-6973
• DOI: 10.2147/IDR.S233326

) is an emerging zoonotic disease mainly in pigs, causing serious infections in humans with high prevalence in Southeast Asia. Despite a relatively high mortality rate, there are limited data regarding the risk factors of this life-threatening infection. Therefore, a 13-year retrospective cohort study in Chiang Mai, Thailand during 2005-2018 was conducted to explore risk factors associated with mortality and to update the outcomes of the disease. positive cases were derived from those with positive isolates from microbiological culture results and Matrix-Assisted Laser Desorption Ionization Time of Flight (MALDI-TOF). Potential risk factors of mortality were identified using univariate and multivariate logistic regression. Of 133 patients with culture-proven infection identified, there were 92 males and 41 females. The mean age was 56.47 years. Septicemia (55.64%) was the most common clinical manifestation followed by meningitis (37.59%) and infective endocarditis (25.56%). Alcohol drinking and raw pork consumption were documented in 66 (49.62%) and 49 (36.84%) cases respectively. The overall mortality rate was 12.03% (n=16). According to the multivariate analysis, the independent risk factors for mortality were prolonged bacteremia ≥ 6 days (OR = 43.57, 95% CI = 2.46-772.80, P =0.010), septic shock (OR = 13.34, 95% CI = 1.63-109.03, P =0.016), and direct bilirubin > 1.5 mg/dL (OR = 12.86, 95% CI = 1.91-86.59, P =0.009). is not infrequent in Northern Thailand, where the cultural food habit of raw pork eating is still practiced. To the best of our knowledge, this is the largest series focusing on risk factors of mortality which has been conducted in Thailand. Prolonged bacteremia ≥ 6 days, septic shock, and direct bilirubin > 1.5 mg/dL were strong predictors associated with mortality. The mortality risk factors identified may be further utilized in clinical practice and future research to improve patient outcomes.