Trends in Bacteria Causing Diarrheal Infection from 2010 to 2018 in Cheonan, Korea: Aeromonas spp., Campylobacter spp., and Clostridioides spp.
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Diarrhea is one of the most common infectious diseases known worldwide. However, few studies have examined anaerobic diarrhea-causing bacteria (DB), which are difficult to culture. Recent advances in molecular biology have facilitated the detection and analysis of anaerobic DB. In this study, long-term trends in anaerobic DB were evaluated in Korea. From 2010 to 2018, symptoms of diarrhea reported were analyzed among patients hospitalized at the Dankook University Hospital in Korea. Results of multiplex polymerase chain reaction based on seasonality, age, overlapping infection, and other factors in patients were evaluated. DB were detected in 38.2% of 1716 stool specimens in the duration of the study. Of the pathogens detected using this method, 49.8% (n = 405/813) were anaerobic bacteria, including Clostridioides perfringens, Campylobacter spp., Clostridioides difficile toxin B, and Aeromonas spp. Among the four anaerobic bacteria, Clostridioides perfringens was the most commonly occurring (15.5%; n = 126/813). Detection rates of Clostridioides perfringens, Clostridioides difficile toxin B, and Aeromonas spp. were 34.1% (n = 22/ 55), 34.9% (n = 43/126), and 40.0% (n = 38/109), respectively. The detection rate of Campylobacter spp. (32.7%; n = 37/115) was the highest in patients between 10 and 20 years of age. The detection rate of anaerobic DB showed an increase in 2018 as compared with that in 2010, and the number of events of diarrhea caused by anaerobic DB also increased in this duration. Further studies are required to devise methods that might prevent the proliferation of anaerobic D
Abstract
Diarrhea is one of the most common infectious diseases known worldwide. However, few studies have examined anaerobic diarrhea-causing bacteria (DB), which are difficult to culture. Recent advances in molecular biology have facilitated the detection and analysis of anaerobic DB. In this study, long-term trends in anaerobic DB were evaluated in Korea. From 2010 to 2018, symptoms of diarrhea reported were analyzed among patients hospitalized at the Dankook University Hospital in Korea. Results of multiplex polymerase chain reaction based on seasonality, age, overlapping infection, and other factors in patients were evaluated. DB were detected in 38.2% of 1716 stool specimens in the duration of the study. Of the pathogens detected using this method, 49.8% (n = 405/813) were anaerobic bacteria, including Clostridioides perfringens, Campylobacter spp., Clostridioides difficile toxin B, and Aeromonas spp. Among the four anaerobic bacteria, Clostridioides perfringens was the most commonly occurring (15.5%; n = 126/813). Detection rates of Clostridioides perfringens, Clostridioides difficile toxin B, and Aeromonas spp. were 34.1% (n = 22/ 55), 34.9% (n = 43/126), and 40.0% (n = 38/109), respectively. The detection rate of Campylobacter spp. (32.7%; n = 37/115) was the highest in patients between 10 and 20 years of age. The detection rate of anaerobic DB showed an increase in 2018 as compared with that in 2010, and the number of events of diarrhea caused by anaerobic DB also increased in this duration. Further studies are required to devise methods that might prevent the proliferation of anaerobic D
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