Prospective Epidemiological Study to Estimate the O-serotype Distribution of Extraintestinal Pathogenic Escherichia Coli (ExPEC) Isolated From Hospitalized Patients Aged 60 Years or Older With Invasive ExPEC Disease (IED) and to Evaluate the Clinical Case Definition and Risk Factors.
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- UMC Utrecht
- 入组人数
- 238
- 试验地点
- 7
- 主要终点
- Distribution of E. coli O-serotypes causing IED in adults aged 60 years or older, as percentage of the total study population.
研究概览
简要总结
The purpose of this study is to collect information from study participants who are hospitalized with an invasive disease caused by Extraintestinal pathogenic E. coli (ExPEC). This information will be used to support the development of a new vaccine to prevent Extraintestinal pathogenic Escherichia coli (ExPEC). E. coli bacteria are a leading cause of serious infections. Especially adults older than 60 years have a higher risk of developing such infections. To date, there is no vaccine available to prevent E. coli infections. To support the development of a vaccine, more information about E. coli infections is first needed. This information will be collected in the current study, such as:
- Medical information such as medical history, diagnosis, duration of hospitalization
- Treatment and outcome of the Extraintestinal pathogenic Escherichia coli (ExPEC)
- Laboratory information
详细描述
Janssen Research & Development is developing ExPEC10V, a 10-valent conjugate vaccine comprising the 10 most predominant O-polysaccharides of ExPEC.
Invasive ExPEC Disease (IED) is defined as an acute illness consistent with bacterial infection that is microbiologically confirmed either by the isolation and identification of E. coli from blood or other normally sterile body sites, or by the isolation and identification of E. coli from urine in a patient with signs and symptoms of invasive disease (presence of systemic inflammatory response syndrome [SIRS], sepsis or septic shock) and no other identifiable source of infection.
ExPEC is the most common cause of infection in humans resulting from gram-negative bacteria. ExPEC comprises a pathogenic group of E. coli strains, possessing the ability to colonize and infect normally sterile body sites and to cause Invasive ExPEC Disease (IED).
ExPEC causes the vast majority of urinary tract infections (UTIs), is the second most frequent cause of neonatal bacteremia and meningitis, and is a leading cause of adult IED, in particular bacteremia and sepsis.
Although IED affects all age categories, adults aged 60 years or older have an increased risk of developing IED, including bacteremia and sepsis. The incidence of community-acquired ExPEC bacteremia increases with age, occurring at a rate of 150/100,000 person-years in the United States (US) adults aged 65 years and older, and 452/100,000 person-years in adults aged 85 years and older. Similar trends have been observed in Europe. In the US, it is estimated that up to 40,000 patients die annually due to IED, in particular from E. coli sepsis. Overall case-fatality rates for ExPEC bacteremia range from 13% to 19% but may be much higher (up to 60%) in the elderly with healthcare-associated infections.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 60 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Patients aged 60 years or older and hospitalized for IED at the start of the study.
- •Culture confirmation of E. coli (1) in normally sterile body sites including blood, and/or (2) in urine in the presence of clinical criteria of an invasive infection (raise in SOFA score >1, sepsis, or septic shock consequent to the infection).
- •For those countries and/or study sites where no waiver for informed consent/assent has been obtained prior to data collection, eligible patients must sign a participation agreement/ICF/IAF allowing data collection and source data verification in accordance with local requirements and/or sponsor policy. For deceased patients, a participation agreement/ICF/IAF must be signed by the patient's next of kin.
排除标准
- •There are no exclusion criteria for this study.
结局指标
主要结局
Distribution of E. coli O-serotypes causing IED in adults aged 60 years or older, as percentage of the total study population.
时间窗: 12 months
Distribution of E. coli O-genotypes causing IED in adults aged 60 years or older, as percentage of the total study population.
时间窗: 12 months
Distribution of IED in adults aged 60 years or older over the following clinical case definitions: "Pyelonephritis", "Urosepsis", "Meningitis", "Arthritis", "Sepsis of unknown origin" and "Others", as a percentage of the total study population.
时间窗: 12 months
次要结局
- Proportion of non-bacteremic and bacteremic IED of the total number of IED cases.(12 months)
- Listing of IED patients with specific risk factors for IED as a proportion of all IED patients.(12 months)
- O-antigen expression profiles(12 months)
- Type of infection (community acquired, hospital-acquired or healthcare-associated) .(12 months)
- Source of infection (presence of an infectious focus within 30 days prior to IED).(12 months)
- Susceptibility of the cultured E. coli strains to antibiotics as determined by EUCAST standards (version9.0) to β-lactam antibiotics.(12 months)
- Mortality associated with IED(12 months)
- Department where patient is presented/admitted to the hospital (emergency ward, general ward, intensive care unit)(12 months)
研究者
MJM Bonten
Professor of Molecular Epidemiology of Infectious Diseases
UMC Utrecht