The changing epidemiology of bacillary dysentery and characteristics of antimicrobial resistance of Shigella isolated in China from 2004–2014

Chang, Zhaorui; Zhang, Jing; Lu, Ran; Sun, Jinsheng; Liu, Fengfeng; Luo, Liang; Zeng, Lingjia; Wang, Liping; Li, Zhongjie; Yu, Hongjie; Liao, Qiaohong

doi:10.1186/s12879-016-1977-1

Cited by 60 publications

(56 citation statements)

References 29 publications

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“…This study found that 68,855 BD cases were reported in Chongqing from 2009 to 2016, with an average annual incidence of 29.394/100,000. Although BD incidence in Chongqing showed a downward trend overall, it was still higher than the incidence in the same period in China (20.28/100,000 in 2009, 15.29/100,000 in 2012, 11.24/ 100,000 in 2014) [21,22], the USA in 2016 (6.53/100, 000), Zhejiang Province between 2004 and 2015 (4.25/ 100,000) and Sichuan Province between 2004 and 2014 (22.12/100,000) [1,5,23], which highlights the serious situation regarding the prevention and control of BD in Chongqing. Chongqing has a subtropical monsoon humid climate and covers an area of 824,000 km 2 , of which 78% is mountainous; it has sufficient precipitation, a warm temperature and a suitable climate for the growth and reproduction of Shigella, which may be one of the reasons BD incidence in Chongqing is higher than that in other areas.…”

Section: Discussionmentioning

confidence: 78%

Epidemiological characteristics of bacillary dysentery from 2009 to 2016 and its incidence prediction model based on meteorological factors

Meng

Liu

Xie

et al. 2019

Environ Health Prev Med

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Background: This study aimed to analyse the epidemiological characteristics of bacillary dysentery (BD) caused by Shigella in Chongqing, China, and to establish incidence prediction models based on the correlation between meteorological factors and BD, thus providing a scientific basis for the prevention and control of BD.Methods: In this study, descriptive methods were employed to investigate the epidemiological distribution of BD. The Boruta algorithm was used to estimate the correlation between meteorological factors and BD incidence. The genetic algorithm (GA) combined with support vector regression (SVR) was used to establish the prediction models for BD incidence. Results: In total, 68,855 cases of BD were included. The incidence declined from 36.312/100,000 to 23.613/100,000, with an obvious seasonal peak from May to October. Males were more predisposed to the infection than females (the ratio was 1.118:1). Children < 5 years old comprised the highest incidence (295.892/100,000) among all age categories, and pre-education children comprised the highest proportion (34,658 cases, 50.335%) among all occupational categories. Eight important meteorological factors, including the highest temperature, average temperature, average air pressure, precipitation and sunshine, were correlated with the monthly incidence of BD. The obtained mean absolute percent error (MAPE), mean squared error (MSE) and squared correlation coefficient (R 2 ) of GA_SVR_MONTH values were 0.087, 0.101 and 0.922, respectively.Conclusion: From 2009 to 2016, BD incidence in Chongqing was still high, especially in the main urban areas and among the male and pre-education children populations. Eight meteorological factors, including temperature, air pressure, precipitation and sunshine, were the most important correlative feature sets of BD incidence. Moreover, BD incidence prediction models based on meteorological factors had better prediction accuracies. The findings in this study could provide a panorama of BD in Chongqing and offer a useful approach for predicting the incidence of infectious disease. Furthermore, this information could be used to improve current interventions and public health planning.

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Section: Discussionmentioning

confidence: 78%

Epidemiological characteristics of bacillary dysentery from 2009 to 2016 and its incidence prediction model based on meteorological factors

Meng

Liu

Xie

et al. 2019

Environ Health Prev Med

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“…The transmission pattern of shigellosis has shifted from water/food-to-person to person-to-person, with high risk groups being particularly men who have sex with other men (MSM) in developed countries [1]. Meanwhile, numerous studies have reported that the incidence in males is higher than that in female [6][7][8]. Does this mean that the transmissibility of shigellosis among males is stronger than that among females?…”

Section: Epidemiological Characteristicsmentioning

confidence: 99%

“…Thus, the water/food-to-person route has been interrupted. Moreover, many studies have indicated different incidences in individuals of various ages [1,8,11]. In this study, we aimed to explore the interpersonal transmission further.…”

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confidence: 99%

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Relative transmissibility of shigellosis among male and female individuals: a modeling study in Hubei Province, China

et al. 2020

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Background: Developing countries exhibit a high disease burden from shigellosis. Owing to the different incidences in males and females, this study aims to analyze the features involved in the transmission of shigellosis among male (subscript m) and female (subscript f) individuals using a newly developed sex-based model. Methods:The data of reported shigellosis cases were collected from the China Information System for Disease Control and Prevention in Hubei Province from 2005 to 2017. A sex-based Susceptible-Exposed-Infectious/ Asymptomatic-Recovered (SEIAR) model was applied to explore the dataset, and a sex-age-based SEIAR model was applied in 2010 to explore the sex-and age-specific transmissions.Results: From 2005 to 2017, 130 770 shigellosis cases (including 73 981 male and 56 789 female cases) were reported in Hubei Province. The SEIAR model exhibited a significant fitting effect with the shigellosis data (P < 0.001). The median values of the shigellosis transmission were 2.3225 × 10 8 for SAR mm (secondary attack rate from male to male), 2.5729 × 10 8 for SAR mf , 2.7630 × 10 -8 for SAR fm , and 2.1061 × 10 -8 for SAR ff . The top five mean values of the transmission relative rate in 2010 (where the subscript 1 was defined as male and age ≤ 5 years, 2 was male and age 6 to 59 years, 3 was male and age ≥ 60 years, 4 was female and age ≤ 5 years, 5 was female and age 6 to 59 years, and 6 was male and age ≥ 60 years) were 5.76 × 10 -8 for β 61 , 5.32 × 10 -8 for β 31 , 4.01 × 10 -8 for β 34 , 7.52 × 10 -9 for β 62 , and 6.04 × 10 -9 for β 64 .Conclusions: The transmissibility of shigellosis differed among male and female individuals. The transmissibility between the genders was higher than that within the genders, particularly female-to-male transmission. The most important route in children (age ≤ 5 years) was transmission from the elderly (age ≥ 60 years). Therefore, the greatest interventions should be applied in females and the elderly.

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“…For example, more than 80.0% of isolates of S. flexneri have proven resistant to ampicillin, nalidixic acid, and tetracycline; and in China from 2004 to 2014, Shigella isolates were highly resistant to nalidixic acid (89%), ampicillin (89%), tetracycline (88%), and sulfamethoxazole (83%). During the study period, isolates resistant to ciprofloxacin and cefotaxime increased, respectively, from 9 and 8% in 2005 to 4 and 30% in 2014 [14,17,18]. Multi-drug-resistant Shigella, including extended spectrum β-lactamases producing Shigella, is also emerging; and has the potential to become a serious threat to public health [11].…”

Section: Discussionmentioning

confidence: 99%

Gastroenteritis in Japanese Females Caused by Shigella flexneri without Definite Infection Route: A Case Report and Mini-Review of Literature

Usuda¹,

Yamada²,

Takeshima³

et al. 2017

J Clin Case Rep

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In Japan, the incidence of Shigellosis is low at approximately 150 cases per year, with the majority of these being imported, mainly from Asia. Sporadic domestic occurrences are also reported, the majority of which absent epidemiological association. We report a case of gastroenteritis caused by Shigella flexneri in a 60-year-old Japanese female who recovered fully following treatment with levofloxacin. While we were unable to identify the route of infection, we suspected imported frozen marine products that may have been handled or processed in an unsafe manner. Shigellosis should be included in the differential diagnosis when presented with a patient exhibiting symptoms of gastrointestinal infection, even in the absence of a history of travel to an endemic area.

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The changing epidemiology of bacillary dysentery and characteristics of antimicrobial resistance of Shigella isolated in China from 2004–2014

Cited by 60 publications

References 29 publications

Epidemiological characteristics of bacillary dysentery from 2009 to 2016 and its incidence prediction model based on meteorological factors

Epidemiological characteristics of bacillary dysentery from 2009 to 2016 and its incidence prediction model based on meteorological factors

Relative transmissibility of shigellosis among male and female individuals: a modeling study in Hubei Province, China

Gastroenteritis in Japanese Females Caused by Shigella flexneri without Definite Infection Route: A Case Report and Mini-Review of Literature

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