Immunity Persistence After Abridged Intradermal Rabies PEP
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 180
- 试验地点
- 3
- 主要终点
- Antibody titers measured (FAVN, RFFIT) and cellular immunity markers one week after a single session of ID rabies vaccine boosting in the two groups
研究概览
简要总结
After exposure, rabies can be prevented in almost 100% of cases by the administration of sufficient and timely post-exposure prophylaxis (PEP). PEP is based on wound cleansing, antisepsis, administration of rabies vaccine as well as rabies immunoglobulin, if reviewed. However, anti-rabies PEP remains too often out of financial and / or geographic access, especially for poor and / or rural populations in endemic countries who remain the most exposed to the risk of contracting rabies. Two major studies planned in Cambodia between 2014 and 2018 - the RESIST 0/1 clinical - epidemiological study and the RESIST-2 study on the antibody response to the vaccine - provided the basis that allowed a change in international recommendations on PPE. Since April 2018, the new "IPC protocol" of three sessions of reduced double doses (0.1 mL x 2) administered intradermally (ID) over one week has replaced the already very effective "TRC protocol" of four sessions over one month which was the reference dose-sparing protocol for endemic countries until 2018. It remains to be determined whether the IPC protocol (3 sessions / 1 week) confers long-term immunity equivalent to that obtained after a TRC ID protocol (4 sessions / 1 month). This question is of importance to public health decision-makers and clinical teams in endemic countries who would hesitate to switch to the abbreviated IPC protocol.
详细描述
This is a multicenter, randomized, non-inferior clinical trial with samples for examinations and vaccination booster.
To achieve this study, persons who previously received PEP and of any age (including children), gender or medical condition (including pregnant women) and whichever the status of the dog which bit at least 2, 5 or 10 years ago will be contacted and invited to participate to the study.
This study will take place in two centers :
- The rabies prevention center at Institut Pasteur du Cambodge
- The rabies prevention center at Institut Pasteur de Madagascar. The study will be coordinated by Institut Pasteur in Paris which will subsequently conduct the analysis in collaboration with researchers at Institut Pasteur du Cambodge and Institut Pasteur de Madagascar.
This study will take place in two visits :
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Other
- 盲法
- None
入排标准
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •person Identified in IP Cambodia or IP Madagascar records for having received ID PEP by 4 sessions/1 month or 3 sessions/1 week at least two, five or 10 years earlier, with no rabies boosting since that time;
- •person Who received information adapter to his/her age and who signed the consent form (or his/her legal tutors)
排除标准
- •person who received Rabies vaccine booster since the earlier PEP
- •person with allergy or other severe unwanted effect at the time of the earlier PEP
结局指标
主要结局
Antibody titers measured (FAVN, RFFIT) and cellular immunity markers one week after a single session of ID rabies vaccine boosting in the two groups
时间窗: 1 year
Absence of statistically significant difference between antibody titers Fluorescent Antibody Virus Neutralization test (FAVN) and Rapid Fluorescent Foci Inhibition Test (RFFIT) and cellular immunity markers one week after a single session of ID rabies vaccine boosting in persons who have received a 3 sessions/1 week vs. 4 sessions/ 1 month ID PEP at least 2, 5 or 10 years earlier.
次要结局
- Antibody titers measured by FAVN and RFFIT and immune response before a single session of ID rabies vaccine boosting in the two groups(1 year)
- Antibody titers measured by FAVN and RFFIT in all subjects for comparison(1 year)