Adherence and efficacy of the 0 - 7 - 21-day versus the 0 - 1 - 6-month hepatitis B vaccination schedules among people who use drugs: a two-year randomized controlled trial.
{"title":"Adherence and efficacy of the 0 - 7 - 21-day versus the 0 - 1 - 6-month hepatitis B vaccination schedules among people who use drugs: a two-year randomized controlled trial.","authors":"Xianbin Hou, Ning Li, Hailan Zhang, Wenjun Liu, Haichao Zheng, Tianyi Zhuang, Zhuoru Zou, Ruyi Xia, Ying Liu, Hongyan Zhang, Tiejun Hou, Zhijun Chen, Baozhong Chen, Fuzhen Wang, Lirong Wang, Xiaoli Wei, Guihua Zhuang","doi":"10.1080/14760584.2026.2626920","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>To compare the adherence and efficacy between the 0 - 7 - 21-day and the 0 - 1 - 6-month hepatitis B virus (HBV) vaccination schedules among people who use drugs (PWUD) in China.</p><p><strong>Research design and methods: </strong>A randomized controlled trial was conducted in 1261 HBV-susceptible PWUD from compulsory isolated detoxification centers (CIDCs) and methadone maintenance treatment (MMT) clinics in Xi'an. A 20 µg per-dose vaccine was used. HBV surface antibody (anti-HBs), surface antigen, and core antibody were tested at months 7, 15, and 22 after the first dose.</p><p><strong>Results: </strong>Third-dose coverage was significantly higher in the 0 - 7 - 21-day group (74.40%) than in the 0 - 1 - 6-month group (51.58%, <i>p</i> < 0.001), mainly driven by participants from CIDCs (77.75% vs. 45.69%). Anti-HBs positive rates at months 7, 15, and 22 among participants who completed all three doses were significantly higher for the 0 - 1 - 6-month schedule (90.71%, 76.82%, and 67.35%) than for the 0 - 7 - 21-day schedule (74.23%, 49.40%, and 40.95%; all <i>p</i> < 0.001). HBV infection incidence was similar between schedules, but significantly different between vaccinees and non-vaccinees (<i>p</i> = 0.018).</p><p><strong>Conclusions: </strong>The 0 - 7 - 21-day schedule substantially enhances three-dose completion in PWUD, but induces a notably weaker anti-HBs response and persistence. Schedules should be selected based on the management models for PWUD and their individual characteristics.</p><p><strong>Clinical trial registration: </strong>Chinese Clinical Trial Registry (ChiCTR1900022403).</p>","PeriodicalId":12326,"journal":{"name":"Expert Review of Vaccines","volume":" ","pages":"2626920"},"PeriodicalIF":5.6000,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Expert Review of Vaccines","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1080/14760584.2026.2626920","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2026/2/8 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"IMMUNOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Background: To compare the adherence and efficacy between the 0 - 7 - 21-day and the 0 - 1 - 6-month hepatitis B virus (HBV) vaccination schedules among people who use drugs (PWUD) in China.
Research design and methods: A randomized controlled trial was conducted in 1261 HBV-susceptible PWUD from compulsory isolated detoxification centers (CIDCs) and methadone maintenance treatment (MMT) clinics in Xi'an. A 20 µg per-dose vaccine was used. HBV surface antibody (anti-HBs), surface antigen, and core antibody were tested at months 7, 15, and 22 after the first dose.
Results: Third-dose coverage was significantly higher in the 0 - 7 - 21-day group (74.40%) than in the 0 - 1 - 6-month group (51.58%, p < 0.001), mainly driven by participants from CIDCs (77.75% vs. 45.69%). Anti-HBs positive rates at months 7, 15, and 22 among participants who completed all three doses were significantly higher for the 0 - 1 - 6-month schedule (90.71%, 76.82%, and 67.35%) than for the 0 - 7 - 21-day schedule (74.23%, 49.40%, and 40.95%; all p < 0.001). HBV infection incidence was similar between schedules, but significantly different between vaccinees and non-vaccinees (p = 0.018).
Conclusions: The 0 - 7 - 21-day schedule substantially enhances three-dose completion in PWUD, but induces a notably weaker anti-HBs response and persistence. Schedules should be selected based on the management models for PWUD and their individual characteristics.
Clinical trial registration: Chinese Clinical Trial Registry (ChiCTR1900022403).
期刊介绍:
Expert Review of Vaccines (ISSN 1476-0584) provides expert commentary on the development, application, and clinical effectiveness of new vaccines. Coverage includes vaccine technology, vaccine adjuvants, prophylactic vaccines, therapeutic vaccines, AIDS vaccines and vaccines for defence against bioterrorism. All articles are subject to rigorous peer-review.
The vaccine field has been transformed by recent technological advances, but there remain many challenges in the delivery of cost-effective, safe vaccines. Expert Review of Vaccines facilitates decision making to drive forward this exciting field.