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Schnadower D, Tarr PI, Charles CT, Gorelick MH, Dean MJ, O’Connell KJ, Mahajan P, Chun TH, Bhatt SR, Roskind CG, Powell EC, Rogers AJ, Vance C, Sapien RE, Gao F, Freedman SB. Randomised controlled trial of Lactobacillus rhamnosus (LGG) versus placebo in children presenting to the emergency department with acute gastroenteritis: the PECARN probiotic study protocol. BMJ Open 2017; 7:e018115. [PMID: 28947466 PMCID: PMC5623493 DOI: 10.1136/bmjopen-2017-018115] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
INTRODUCTION Acute gastroenteritis (AGE) is a common and burdensome condition that affects millions of children worldwide each year. Currently available strategies are limited to symptomatic management, treatment and prevention of dehydration and infection control; no disease-modifying interventions exist. Probiotics, defined as live microorganisms beneficial to the host, have shown promise in improving AGE outcomes, but existing studies have sufficient limitations such that the use of probiotics cannot currently be recommended with confidence. Here we present the methods of a large, rigorous, randomised, double-blind placebo-controlled study to assess the effectiveness and side effect profile of Lactobacillus rhamnosus GG (LGG) (ATCC 53103) in children with AGE. METHODS AND ANALYSIS The study is being conducted in 10 US paediatric emergency departments (EDs) within the federally funded Pediatric Emergency Care Applied Research Network, in accordance with current SPIRIT and CONSORT statement recommendations. We will randomise 970 children presenting to participating EDs with AGE to either 5 days of treatment with LGG (1010colony-forming unit twice a day) or placebo between July 2014 to December 2017. The main outcome is the occurrence of moderate-to-severe disease over time, as defined by the Modified Vesikari Scale. We also record adverse events and side effects related to the intervention. We will conduct intention-to-treat analyses and use an enrichment design to restore the statistical power in case the presence of a subpopulation with a substantially low treatment effect is identified. ETHICS AND DISSEMINATION Institutional review board approval has been obtained at all sites, and data and material use agreements have been established between the participating sites. The results of the trial will be published in peer-reviewed journals. A deidentified public data set will be made available after the completion of all study procedures. TRIAL REGISTRATION NUMBER NCT01773967.
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Affiliation(s)
- David Schnadower
- Division of Pediatric Emergency Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Phillip I Tarr
- Division of Gastroenterology and Nutrition, Department of Pediatrics, Washington University, School of Medicine, St. Louis, Missouri, USA
| | - Casper T Charles
- Department of Pediatrics, University of Utah, Salt Lake City, Utah, USA
| | - Marc H Gorelick
- Central Administration, Children’s Hospital Minnesota, Minneapolis, Minnesota, USA
| | - Michael J Dean
- Department of Pediatrics, University of Utah, Salt Lake City, Utah, USA
| | - Karen J O’Connell
- Division of Emergency Medicine, Children’s National Health System, Department of Pediatrics, The George Washington School of Medicine and Health Sciences, Washington, DC, USA
| | - Prashant Mahajan
- Division of Emergency Medicine, Department of Pediatrics, Children’s Hospital of Michigan Wayne State University, Detroit, Michigan, USA
- Departments of Emergency Medicine and Pediatrics, University of Michigan, Ann Arbor, Michigan, USA
| | - Thomas H Chun
- Department of Emergency Medicine and Pediatrics Providence, Hasbro Children’s Hospital and Brown University, Providence, Rhode Island, USA
| | - Seema R Bhatt
- Division of Emergency Medicine, Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
| | - Cindy G Roskind
- Division of Emergency Medicine, Department of Pediatrics, Columbia University College of Physicians & Surgeons, New York, New York, USA
| | - Elizabeth C Powell
- Division of Emergency Medicine, Department of Pediatrics, Ann & Robert H. Lurie Children’s Hospital, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Alexander J Rogers
- Departments of Emergency Medicine and Pediatrics, University of Michigan, Ann Arbor, Michigan, USA
| | - Cheryl Vance
- Departments of Emergency Medicine and Pediatrics, University of California, Davis, School of Medicine, Sacramento, California, USA
| | - Robert E Sapien
- Department of Emergency Medicine, University of New Mexico, Albuquerque, New Mexico, USA
| | - Feng Gao
- Department of Surgery, Division of Public Health Sciences, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA
| | - Stephen B Freedman
- Sections of Pediatric Emergency Medicine and Gastroenterology, Department of Pediatrics, Alberta Children’s Hospital, Alberta Children’s Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Canada
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Epidemiology, clinical features, and microbiology of patients with diarrhea in community clinics in Taiwan. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2017; 51:527-534. [PMID: 28688828 DOI: 10.1016/j.jmii.2017.05.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 05/16/2017] [Accepted: 05/24/2017] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To investigate the clinical features and microbiology of patients with diarrheal diseases in Taiwan. METHODS From March 2014 to October 2014, patients with diarrheal diseases referred from the community clinics were enrolled into our prospective study. Demographics and clinical features of the participants were acquired. Stool samples were examined by the Luminex Gastrointestinal Pathogen Panel assay. Data were analyzed by SAS version 9.4. RESULTS A total of 545 patients were enrolled into this study. Male and adults accounted for 52.3% and 82.6% of patients, respectively. The median age was 36 years. Enteropathogen(s) was identified in 43.3% of patients and 8.5% of them had more than one agent in their stool samples. Viruses, especially norovirus GI/GII, were the predominant agents of gastroenteritis. Moreover, Campylobacter species was the most common bacterial agent. Bloody stool was frequently reported in patients with bacterial diarrhea (P = 0.002); contrarily, watery stool was significantly associated with viral diarrhea (P < 0.0001). Regional variation and seasonality of microbiological distribution were also observed. CONCLUSION In Taiwan, viruses were the predominant pathogens among patients with diarrheal diseases who visited community clinics. The therapeutic strategies for diarrheal patients should be based on the epidemiological and clinical characteristics.
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Lai CC, Ji DD, Wu FT, Mu JJ, Yang JR, Jiang DDS, Lin WY, Chen WT, Yen MY, Wu HS, Chen THH. Etiology and Risk Factors of Acute Gastroenteritis in a Taipei Emergency Department: Clinical Features for Bacterial Gastroenteritis. J Epidemiol 2015; 26:216-23. [PMID: 26639752 PMCID: PMC4808689 DOI: 10.2188/jea.je20150061] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND The causative pathogen is rarely identified in the emergency department (ED), since the results of cultures are usually unavailable. As a result, antimicrobial treatment may be overused. The aim of our study was to investigate the pathogens, risk factors of acute gastroenteritis, and predictors of acute bacterial gastroenteritis in the ED. METHODS We conducted a matched case-control study of 627 stool samples and 612 matched pairs. RESULTS Viruses (41.3%) were the leading cause of gastroenteritis, with noroviruses (32.2%) being the most prevalent, followed by bacteria (26.8%) and Giardia lamblia (12.4%). Taking antacids (adjusted odds ratio [aOR] 4.10; 95% confidence interval [CI], 2.57-6.53), household members/classmates with gastroenteritis (aOR 4.69; 95% CI, 2.76-7.96), attending a banquet (aOR 2.29; 95% CI, 1.64-3.20), dining out (aOR 1.70; 95% CI, 1.13-2.54), and eating raw oysters (aOR 3.10; 95% CI, 1.61-5.94) were highly associated with gastroenteritis. Elders (aOR 1.04; 05% CI, 1.02-1.05), those with CRP >10 mg/L (aOR 2.04; 95% CI, 1.15-3.62), or those who were positive for fecal leukocytes (aOR 2.04; 95% CI, 1.15-3.62) or fecal occult blood (aOR 1.97; 95% CI, 1.03-3.77) were more likely to be hospitalized in ED. In addition, presence of fecal leukocytes (time ratio [TR] 1.22; 95% CI, 1.06-1.41), abdominal pain (TR 1.20; 95% CI, 1.07-1.41), and frequency of vomiting (TR 0.79; 95% CI, 0.64-0.98) were significantly associated with the duration of acute gastroenteritis. Presence of fecal leukocytes (aOR 2.08; 95% CI, 1.42-3.05), winter season (aOR 0.45; 95% CI, 0.28-0.74), frequency of diarrhea (aOR 1.69; 95% CI, 1.01-2.83), and eating shrimp or crab (aOR 1.53; 95% CI, 1.05-2.23) were highly associated with bacterial gastroenteritis. The area under the receiver operating characteristic curve of the final model was 0.68 (95% CI, 0.55-0.63). CONCLUSIONS Acute bacterial gastroenteritis was highly associated with season, frequency of diarrhea, frequency of vomiting, and eating shrimp or crab.
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Affiliation(s)
- Chao-Chih Lai
- Emergency Department, Taipei City Hospital, Ren-Ai Branch
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Gibbons CL, Mangen MJJ, Plass D, Havelaar AH, Brooke RJ, Kramarz P, Peterson KL, Stuurman AL, Cassini A, Fèvre EM, Kretzschmar MEE. Measuring underreporting and under-ascertainment in infectious disease datasets: a comparison of methods. BMC Public Health 2014; 14:147. [PMID: 24517715 PMCID: PMC4015559 DOI: 10.1186/1471-2458-14-147] [Citation(s) in RCA: 229] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Accepted: 02/05/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Efficient and reliable surveillance and notification systems are vital for monitoring public health and disease outbreaks. However, most surveillance and notification systems are affected by a degree of underestimation (UE) and therefore uncertainty surrounds the 'true' incidence of disease affecting morbidity and mortality rates. Surveillance systems fail to capture cases at two distinct levels of the surveillance pyramid: from the community since not all cases seek healthcare (under-ascertainment), and at the healthcare-level, representing a failure to adequately report symptomatic cases that have sought medical advice (underreporting). There are several methods to estimate the extent of under-ascertainment and underreporting. METHODS Within the context of the ECDC-funded Burden of Communicable Diseases in Europe (BCoDE)-project, an extensive literature review was conducted to identify studies that estimate ascertainment or reporting rates for salmonellosis and campylobacteriosis in European Union Member States (MS) plus European Free Trade Area (EFTA) countries Iceland, Norway and Switzerland and four other OECD countries (USA, Canada, Australia and Japan). Multiplication factors (MFs), a measure of the magnitude of underestimation, were taken directly from the literature or derived (where the proportion of underestimated, under-ascertained, or underreported cases was known) and compared for the two pathogens. RESULTS MFs varied between and within diseases and countries, representing a need to carefully select the most appropriate MFs and methods for calculating them. The most appropriate MFs are often disease-, country-, age-, and sex-specific. CONCLUSIONS When routine data are used to make decisions on resource allocation or to estimate epidemiological parameters in populations, it becomes important to understand when, where and to what extent these data represent the true picture of disease, and in some instances (such as priority setting) it is necessary to adjust for underestimation. MFs can be used to adjust notification and surveillance data to provide more realistic estimates of incidence.
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Affiliation(s)
- Cheryl L Gibbons
- Centre for Immunity, Infection and Evolution, Ashworth Laboratories, Kings Buildings, University of Edinburgh, Edinburgh, UK.
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Najnin N, Forbes A, Sinclair M, Leder K. Risk factors for community-based reports of gastrointestinal, respiratory, and dermal symptoms: findings from a cohort study in Australia. J Epidemiol 2013; 24:39-46. [PMID: 24240632 PMCID: PMC3872523 DOI: 10.2188/jea.je20130082] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Background Although gastrointestinal (GI), respiratory, and dermal symptoms are common, few studies have conducted concurrent and comparative prospective analyses of risk factors for these 3 morbidity outcomes. Methods We used data from a community-based randomized controlled trial among 277 South Australian families to analyze GI (diarrhea, vomiting), respiratory (sore throat, runny nose, cough) and dermal (rash, generalized itch, dermal infection) symptoms. Results Log-binomial regression analysis revealed similar risks of GI (adjusted risk ratio [RR], 1.65; 95% CI, 1.05–2.58) and respiratory (RR, 1.68; 95% CI, 1.31–2.15) symptoms among childcare/kindergarten attendees. Swimming in public pools/spas in the current or previous week was associated with all 3 symptom complexes, conferring similar risk for each (RR for GI: 1.33; 95% CI, 0.99–1.77; respiratory: 1.20; 95% CI, 1.04–1.38; dermal: 1.41; 95% CI, 1.08–1.85). Pet ownership was not associated with symptoms. Household clustering of GI and respiratory symptoms was common, and clustering of respiratory symptoms correlated with number of individuals per household. Conclusions This simultaneous examination of risk factors for 3 health outcomes yielded new comparative data that are useful for developing prevention strategies.
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Affiliation(s)
- Nusrat Najnin
- Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University
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Plomin R. Commentary: Why are children in the same family so different? Non-shared environment three decades later. Int J Epidemiol 2011; 40:582-92. [PMID: 21807643 PMCID: PMC3147062 DOI: 10.1093/ije/dyq144] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Affiliation(s)
- Robert Plomin
- King's College London, MRC Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, London, SE5 8AF, UK.
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Lai CC, Wu FT, Ji DD, Mu JJ, Yang JR, Chiu KT, Lin WY, Li C, Fu YP, Chen WT, Lee BC, Jiang DDS, Yen MY, Wu HS. Gastroenteritis in a Taipei emergency department: aetiology and risk factors. Clin Microbiol Infect 2011; 17:1071-7. [DOI: 10.1111/j.1469-0691.2010.03377.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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