- ICH GCP
- 미국 임상 시험 레지스트리
- 임상시험 NCT00757900
Efficacy of Influenza Vaccine in HIV Infected Adults
Vaccination of HIV infected individuals with the sub-unit influenza vaccine is safe; however it induces only moderate immune responses and likewise is modest in its protection compared to HIV uninfected individuals. Based upon the available data, the South African Thoracic Society has provisionally recommended the use of influenza vaccine in HIV infected individuals with CD4+ counts of > 200/ml and viral loads of < 100 000 copies/ml.(Green R et al. In press, SAMJ). This proposal is however based upon recommendations made elsewhere with minimal level of evidence regarding its benefit, and no evidence from countries with a high prevalence of HIV. Very few HIV infected adults, however, actually do receive influenza vaccine in South Africa, partly because of the absence of compelling data regarding the burden of disease in Africa as well as lack of vaccine effectiveness and issues related to physician awareness and access to influenza vaccine in the public immunization program.
The conflicting evidence, between developed countries and Africa, regarding the effectiveness of PPV highlight the drawbacks of extrapolating vaccine effectiveness data from developed countries to developing countries. Differences in the epidemiology of HIV between developed countries in which the prevalence of HIV is low to that of high-burden sub-Saharan African countries include:
- differences in the mode of transmission of HIV and demographics of the infected population.
- differences in standard of care, including access to prophylaxis against opportunistic infections and use of highly active anti-retroviral therapy (HAART)
- differences in risk for disease from opportunistic pathogens, e.g. Mycobacterium tuberculosis, etc.
These differences may all contribute to differences in the risk and severity of influenza illness among HIV infected adults from these communities as well as possibly responsiveness and effectiveness of vaccination.
The investigators are conducting a double-blinded, placebo controlled randomized trial at the HIV treatment clinic at Helen Joseph Hospital to determine the effectiveness of influenza vaccination in HIV infected adults in South Africa. The significance of the findings from this study will help quantify the burden of influenza illness in African HIV infected adults, as well as assist in making more informed recommendations for the use of influenza vaccine in HIV infected adults and in guiding national policy for preparing for a future influenza virus-pandemic.
연구 개요
연구 유형
등록 (실제)
단계
- 4단계
연락처 및 위치
연구 장소
-
-
Gauteng
-
Johannesburg, Gauteng, 남아프리카
- Helen Joseph Hospital
-
-
참여기준
자격 기준
공부할 수 있는 나이
건강한 자원 봉사자를 받아들입니다
연구 대상 성별
설명
Inclusion Criteria:
- HIV infected adult on stable first line HAART for more than 3 months or anti-retroviral naïve HIV infected adult with a CD4+ cell count >100 cells/ml performed within the previous 3 months in relation to the date of randomization.
- Age 18-55 years.
- Willing and able to maintain weekly contact at least during period of April - August (i.e. presupposed influenza period) either through SMS or telephonic contact.
- Willing and able to adhere to study protocol re: attendance to clinic for scheduled and illness visits.
Exclusion Criteria:
- Any contraindication to influenza vaccination, including known allergy to egg.
- Currently on treatment for tuberculosis or received treatment for tuberculosis in the past 6 months.
- History of chronic lung disease which required maintenance therapy either currently or in the past 6 months.
- Any contraindication to intramuscular injections.
- Current known grade 3 or grade 4 laboratory or clinical toxicity as per DAIDS toxicity tables.
- Any previous history of influenza or pneumococcal vaccination.
- Any plan to vaccinate against influenza or pneumococcal disease during the course of the study.
- Plan to emigrate from the study area within the next year.
- On steroid therapy for >21 days (current or within the past 30 days).
- In the investigators opinion unable to maintain study procedures.
공부 계획
연구는 어떻게 설계됩니까?
디자인 세부사항
- 주 목적: 방지
- 할당: 무작위
- 중재 모델: 병렬 할당
- 마스킹: 삼루타
무기와 개입
참가자 그룹 / 팔 |
개입 / 치료 |
---|---|
간섭 없음: 2
|
|
활성 비교기: 1
To receive a sub-unit influenza vaccine
|
Purified polyvalent vaccine for active immunisation against influenza.The vaccine is an inactivated split virus mixture of different group A and B viral strains.
One 0.5 ml dose, intramuscular route.
|
연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
기간 |
---|---|
First episode of culture-confirmed influenza illness caused by community-acquired subtypes antigenically similar to the strains included in the influenza vaccine which occurred at least 14 days following study-vaccine administration.
기간: 1st May 2008 and ending 30th September 2008.
|
1st May 2008 and ending 30th September 2008.
|
The antibody response for each virus strain. Seroconversion will be defined as a ≥4-fold increase in antibody titer relative to that season's baseline titer for each strain.
|
2차 결과 측정
결과 측정 |
---|
Incidence of solicited reactogenic events occurring within 72 hours of vaccination.
|
Changes in CD4+ cell count and HIV viral load.
|
Hospitalization or death for any physician-diagnosed respiratory illness in which influenza virus antigenically similar to vaccine strain is identified.
|
공동 작업자 및 조사자
수사관
- 수석 연구원: Shabir A Madhi, MBBCH PhD, University of Witwatersrand, South Africa
- 수석 연구원: Ian Sanne, MBBCh, Clinical HIV Research Unit
간행물 및 유용한 링크
연구 기록 날짜
연구 주요 날짜
연구 시작
기본 완료 (실제)
연구 완료 (실제)
연구 등록 날짜
최초 제출
QC 기준을 충족하는 최초 제출
처음 게시됨 (추정)
연구 기록 업데이트
마지막 업데이트 게시됨 (추정)
QC 기준을 충족하는 마지막 업데이트 제출
마지막으로 확인됨
추가 정보
이 연구와 관련된 용어
키워드
추가 관련 MeSH 약관
기타 연구 ID 번호
- CHRU02 (Ethics ref no 080212)
이 정보는 변경 없이 clinicaltrials.gov 웹사이트에서 직접 가져온 것입니다. 귀하의 연구 세부 정보를 변경, 제거 또는 업데이트하도록 요청하는 경우 register@clinicaltrials.gov. 문의하십시오. 변경 사항이 clinicaltrials.gov에 구현되는 즉시 저희 웹사이트에도 자동으로 업데이트됩니다. .
HIV 감염에 대한 임상 시험
-
Hospital Clinic of Barcelona완전한
-
CDC FoundationGilead Sciences알려지지 않은
-
University of WashingtonNational Institute of Mental Health (NIMH)모병
-
University of Minnesota빼는HIV 감염 | HIV/에이즈 | 에이즈 | 보조기구 | 에이즈/HIV 문제 | 에이즈와 감염미국
-
French National Agency for Research on AIDS and...Elizabeth Glaser Pediatric AIDS Foundation완전한파트너 HIV 테스트 | 부부 에이즈 상담 | 커플커뮤니케이션 | HIV 발병률카메룬, 도미니카 공화국, 그루지야, 인도
-
Michael HoelscherClinton Health Access Initiative Inc.; Instituto Nacional de Saúde (INS), Ministério da... 그리고 다른 협력자들모집하지 않고 적극적으로HIV, 신생아 HIV 조기 진단(EID), 현장 진료 검사(PoC)모잠비크, 탄자니아
-
Allegheny Singer Research Institute (also known...모집하지 않고 적극적으로
-
National Institute of Allergy and Infectious Diseases...Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)완전한
-
Erasmus Medical Center모병
-
Erasmus Medical Center모집하지 않고 적극적으로