Clinical Infectious Diseases最新文献

{"title":"Efficacy and Safety of Systematic Corticosteroids treatment among HIV-Positive Patients with Tuberculosis: a systematic review and meta-analysis of randomized controlled trials","authors":"Jiaqi Pu, Shouquan Wu, Jian-Qing He","doi":"10.1093/cid/ciae563","DOIUrl":"https://doi.org/10.1093/cid/ciae563","url":null,"abstract":"Introduction The efficacy and safety of corticosteroids in patients with human immunodeficiency virus (HIV) and tuberculosis (TB) remain controversial. Method PubMed, Embase, Web of Science, and the Cochrane Database were searched on September 19, 2024. The primary outcome was all-cause mortality, while secondary outcomes included serious adverse events. A random-effects model calculated risk ratios (RR) with 95% confidence intervals (CIs). Result Seven RCTs involving 1,410 HIV-positive TB patients were included. Corticosteroid use was not significantly reduce all-cause mortality (RR = 0.91, 95% CI: 0.79-1.04, P = 0.17) and did not significantly increase serious adverse events (RR = 0.96, 95% CI: 0.82-1.13, P = 0.63). Conclusion This meta-analysis of seven RCTs involving 1,410 HIV-positive TB patients found that corticosteroid treatment neither significantly reduced all-cause mortality nor increased serious adverse events. Further large-scale RCTs with extended follow-up are needed to explore potential benefits in subgroups, optimize treatment protocols, and inform clinical guidelines.","PeriodicalId":10463,"journal":{"name":"Clinical Infectious Diseases","volume":null,"pages":null},"PeriodicalIF":11.8,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142599659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Alleviation of COVID-19 Symptoms and Reduction in Healthcare Utilization Among High-Risk Patients Treated With Nirmatrelvir/Ritonavir (NMV/R): A phase 3 randomized trial","authors":"Jennifer Hammond, Heidi Leister-Tebbe, Annie Gardner, Paula Abreu, Weihang Bao, Wayne Wisemandle, Wajeeha Ansari, Magdalena Alicja Harrington, Abraham Simón-Campos, Kara W Chew, Rienk Pypstra, James M Rusnak","doi":"10.1093/cid/ciae551","DOIUrl":"https://doi.org/10.1093/cid/ciae551","url":null,"abstract":"Background Nirmatrelvir/ritonavir (NMV/r) is an oral antiviral treatment for mild to moderate COVID-19. Methods This phase 2/3, double-blind, randomized (1:1) study assessed oral NMV/r 300 mg/100 mg versus placebo every 12 hours for 5 days in high-risk, unvaccinated, nonhospitalized, symptomatic adults with COVID-19 from 343 sites across 21 countries. In testing the primary endpoint of COVID-19‒related hospitalization and all-cause deaths and key secondary endpoints including symptom duration and COVID-19‒related medical visits, Type I error was controlled with prespecified sequential testing and the Hochberg procedure. Results Among 2113 randomized patients enrolled from July 2021 through December 2021, 1966 (NMV/r, n=977; placebo, n=989) were included in the prespecified analysis population (symptom onset ≤5 days, did not receive monoclonal antibodies). NMV/r significantly reduced times to sustained alleviation (median, 13 vs 15 days; hazard ratio [HR]=1.27, p<0.0001) and resolution (16 vs 19 days; HR=1.20, p=0.0022) through Day 28 and significantly reduced the number of COVID-19‒related medical visits and the proportion of patients with such visits. Hospitalized patients treated with NMV/r had shorter stays, none required ICU admission or mechanical ventilation, and all were discharged to home/self-care. Fewer NMV/r-treated patients required additional treatment for COVID-19. No NMV/r-treated patients died through Week 24 compared with 15 placebo-treated patients. Conclusions In addition to reducing COVID-19‒related hospitalization or death from any cause through Day 28, NMV/r was found to also reduce duration of COVID-19 symptoms and utilization of healthcare resources versus placebo in patients at high risk of progressing to severe disease. Clinical Trial Information ClinicalTrials.gov, NCT04960202, https://clinicaltrials.gov/study/NCT04960202","PeriodicalId":10463,"journal":{"name":"Clinical Infectious Diseases","volume":null,"pages":null},"PeriodicalIF":11.8,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142598225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"OPAT and Severe Sepsis Mortality.","authors":"Michael P Dailey","doi":"10.1093/cid/ciae553","DOIUrl":"10.1093/cid/ciae553","url":null,"abstract":"","PeriodicalId":10463,"journal":{"name":"Clinical Infectious Diseases","volume":null,"pages":null},"PeriodicalIF":8.2,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142590181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bivalent RSVpreF Vaccine in Adults 18 to <60 Years Old With High-Risk Conditions","authors":"Matthew Davis, William Towner, Elliot DeHaan, Qin Jiang, Wen Li, Farah Rahman, Michael Patton, Hayley Wyper, Maria Maddalena Lino, Uzma N Sarwar, Zaynah Majid-Mahomed, Saumil Mehta, William Howitt, Kevin Cannon, Elena Kalinina, David Cooper, Kena A Swanson, Annaliesa S Anderson, Alejandra Gurtman, Iona Munjal","doi":"10.1093/cid/ciae550","DOIUrl":"https://doi.org/10.1093/cid/ciae550","url":null,"abstract":"Background Older individuals and adults with certain chronic or immunocompromising health conditions are at increased risk of severe RSV disease. Methods In this phase 3 randomized trial of RSVpreF safety and immunogenicity in 18−59-year-olds at high-risk of severe RSV disease, participants were randomized 2:1 to 1 RSVpreF (120 µg) or placebo dose. Primary safety endpoints included reactogenicity events and adverse events (AEs) through 7 days and 1 month after vaccination, respectively, and serious AEs (SAEs) and newly diagnosed chronic medical conditions (NDCMCs) throughout the study. In primary analyses, immunogenicity elicited 1 month after RSVpreF was bridged to a randomly selected subset of ≥60-year-olds receiving RSVpreF from the immunogenicity subset in the pivotal phase 3 RENOIR trial, which demonstrated RSVpreF efficacy. Noninferiority was declared if 95% CI lower bounds were &amp;gt;0.667 (neutralizing titer adjusted geometric mean ratios) and &amp;gt;−10% (seroresponse rate differences) for RSV-A and RSV-B. Results Overall, 678 participants received RSVpreF (n=453) or placebo (n=225). Most reactogenicity events were mild/moderate; severe events occurred in ≤2.0% of participants overall. AE frequencies were similar in RSVpreF (7.1%) and placebo recipients (7.6%). No vaccine-related SAEs or NDCMCs were reported. One month after RSVpreF administration, noninferiority criteria were met in 18−59-year-olds versus ≥60-year-olds for RSV-A and RSV-B neutralizing titers and seroresponse rates. Conclusion RSVpreF was well tolerated with no safety concerns and demonstrated immunobridging to efficacy in 18−59-year-olds at high-risk of severe RSV disease versus ≥60-year-olds in whom efficacy was previously demonstrated, supporting use of RSVpreF to prevent RSV-associated disease in this population. NCT05842967.","PeriodicalId":10463,"journal":{"name":"Clinical Infectious Diseases","volume":null,"pages":null},"PeriodicalIF":11.8,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142598226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Differences in Trends in Cancer Incidence Rates Among People with HIV during 2001–2019 By Race and Ethnicity and By Risk Group in the United States","authors":"Qianlai Luo, Marie-Josèphe Horner, Cameron B Haas, Jennifer K McGee-Avila, Ruth M Pfeiffer, Eric A Engels, Karen Pawlish, Analise Monterosso, David J Riedel, Xiao-Cheng Wu, Lou Gonsalves, Suzanne Speers, Colby Cohen, Meredith S Shiels","doi":"10.1093/cid/ciae555","DOIUrl":"https://doi.org/10.1093/cid/ciae555","url":null,"abstract":"Background Cancer risk among people with HIV (PWH) has declined over time as a result of antiretroviral therapy, but it is unclear whether all racial/ethnic groups and transmission risk groups have experienced equal declines. Methods We used data on PWH aged ≥20 years old from the HIV/AIDS Cancer Match Study during 2001–2019. We used Poisson regression to assess time trends in incidence rates for each cancer site by racial/ethnicity and risk group, adjusting for age, registry, and sex. We also estimated adjusted rate ratios across racial and ethnic and risk groups in 2001-2004 and 2015-2019. Results Trends in age-standardized rates differed across Black, White and Hispanic PWH, and across risk groups for some cancers. For example, liver cancer rates declined 23% per 5-year period among White PWH, 11% in Black PWH and 18% in Hispanic PWH. Anal cancer rates declined among men who have sex with men, were stable among people who inject drugs, and increased among other risk groups Between 2001-2004 and 2015-2019, relative difference in cancer incidence rates by race/ethnicity increased for HL and liver cancer but decreased for NHL; by risk group, relative differences increased for NHL and liver cancer, and decreased for HL, lung and anal cancers. Conclusions Among PWH in the US, during 2001–2019, HL, lung, liver, and cervical cancer rate trends were different across racial/ethnic groups. HL, lung, anal, and liver cancer rates trends were different across risk groups. Future work should examine underlying causes of the differences in trends.","PeriodicalId":10463,"journal":{"name":"Clinical Infectious Diseases","volume":null,"pages":null},"PeriodicalIF":11.8,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142597848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diagnostic accuracy of TB screening tests in a prospective multinational cohort: Chest-X-ray with computer-aided detection, Xpert TB host response, and C-reactive protein","authors":"Rebecca Crowder, Balamugesh Thangakunam, Alfred Andama, Devasahayam J Christopher, Victoria Dalay, Welile Nwamba, Sandra V Kik, Dong Van Nguyen, Nguyen Viet Nhung, Patrick P J Phillips, Morten Ruhwald, Grant Theron, William Worodria, Charles Yu, Payam Nahid, Adithya Cattamanchi, Ankur Gupta-Wright, Claudia M Denkinger","doi":"10.1093/cid/ciae549","DOIUrl":"https://doi.org/10.1093/cid/ciae549","url":null,"abstract":"Background Accessible, accurate screening tests are necessary to advance tuberculosis (TB) case finding and early detection in high-burden countries. Methods We prospectively screened adults with ≥2 weeks of cough at primary health centers in the Philippines, Vietnam, South Africa, Uganda, and India. Participants received chest-X-ray, Cepheid Xpert TB Host Response (Xpert HR) testing, and point-of-care C-reactive protein (CRP) testing (Boditech). Chest-X-ray images were processed using CAD4TB v7, a computer-aided detection algorithm. We assessed diagnostic accuracy against a microbiologic reference standard (sputum Xpert Ultra, culture). Optimal cut-points were chosen to maximize specificity at 90% sensitivity. Two-test screening algorithms were considered, using 1) sequential negative serial screening (positive defined as positive on either test) and 2) sequential positive serial screening (positive defined as positive on both tests). Results Between July 2021 and August 2022, 1,392 participants with presumptive TB had valid index tests and reference standard results, and 303 (22%) had confirmed TB. In head-to-head comparisons, CAD4TB v7 showed the highest specificity at 90% sensitivity (70.3% vs. 65.1% for Xpert HR, difference 95% CI 1.6 to 8.9; 49.7% for CRP, difference 95% CI 17.0 to 24.3). Three two-test screening algorithms met WHO target product profile (TPP) minimum accuracy thresholds and had higher accuracy than any test alone. At 90% sensitivity, the specificity was 79.6% for Xpert HR-CAD4TB [sequential negative], 75.9% for CRP-CAD4TB [sequential negative], and 73.7% for Xpert HR-CAD4TB [sequential positive]. Conclusions CAD4TB achieves TPP targets and outperforms Xpert HR and CRP. Combining screening tests further increased accuracy. Registration NCT04923958","PeriodicalId":10463,"journal":{"name":"Clinical Infectious Diseases","volume":null,"pages":null},"PeriodicalIF":11.8,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142596491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gauging Medical Students' Interests in Infectious Diseases.","authors":"Collin Telchik, Christopher J Peterson, Taylor Yakubik, Sharon Park, Anthony Baffoe-Bonnie, Lauren Sisco","doi":"10.1093/cid/ciae552","DOIUrl":"https://doi.org/10.1093/cid/ciae552","url":null,"abstract":"<p><strong>Background: </strong>Infectious diseases is a crucial specialty in medicine, yet applications for fellowship have declined even as the United States faces an imminent shortage of infectious disease physicians. Career interests often develop in medical school, but little is known about which interests and experiences are associated with interest in ID.</p><p><strong>Objective: </strong>Evaluate interest in ID among medical students and identify factors associated with interest and disinterest in ID careers.</p><p><strong>Methods: </strong>We developed a 26-question survey to gauge interest in infectious diseases (ID). All 16 medical schools in Texas were contacted and invited to participate.</p><p><strong>Results: </strong>A total of 262 students across 9 medical school campuses completed the survey. Those interested in ID as a career had a significantly higher interest in public health (p<0.0001) and global (p<0.0003) health. The presence of an ID campus interest group (p<0.0015) and direct experience with the ID profession (p<0.0001) were also associated with interest. The most common reasons for lack of interest were lack of interest in pursuing internal medicine or pediatric residency, lack of compensation, and lack of procedures. Those interested in ID expressed interest in a wide variety of career pathways within ID, the most common being general inpatient and outpatient ID, as well as medical microbiology and global health/tropical medicine/travel medicine.</p><p><strong>Conclusions: </strong>Based on this survey, recruitment efforts for new ID fellows might include focusing on students with interests in public and global health, as well as increasing direct exposure to ID at the medical school level.</p>","PeriodicalId":10463,"journal":{"name":"Clinical Infectious Diseases","volume":null,"pages":null},"PeriodicalIF":8.2,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142590178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Global trends in CD4 count measurement and distribution at first antiretroviral treatment initiation.","authors":"Reneé de Waal, Kara Wools-Kaloustian, Ellen Brazier, Keri N Althoff, Antoine Jaquet, Stephany N Duda, Nagalingeswaran Kumarasamy, Theodora Savory, Helen Byakwaga, Gad Murenzi, Amy Justice, Didier K Ekouevi, Carina Cesar, Mark K U Pasayan, Agness Thawani, Charles Kasozi, Pelagie Babakazo, Maile Karris, Eugene Messou, Claudia P Cortes, Cordelia Kunzekwenyika, Jun Yong Choi, Noela C Owarwo, Annabelle Niyongabo, Vincent C Marconi, Oliver Ezechi, Jessica L Castilho, Kathy Petoumenos, Leigh Johnson, Nathan Ford, Reshma Kassanjee","doi":"10.1093/cid/ciae548","DOIUrl":"10.1093/cid/ciae548","url":null,"abstract":"<p><strong>Background: </strong>While people with HIV (PWH) start antiretroviral treatment (ART) regardless of CD4 count, CD4 measurement remains crucial for detecting advanced HIV disease and evaluating ART programmes. We explored CD4 measurement (proportion of PWH with a CD4 result available) and prevalence of CD4 <200 cells/µL at ART initiation within the International epidemiology Databases to Evaluate AIDS (IeDEA) global collaboration.</p><p><strong>Methods: </strong>We included PWH at participating ART programmes who first initiated ART at age 15-80 years during 2005-2019. We described proportions of PWH (i) with CD4 (measured within 6 months before to 2 weeks after ART initiation); and (ii) among those with a CD4, with CD4 <200; by year of ART initiation and region.</p><p><strong>Results: </strong>We included 1,355,104 PWH from 42 countries in 7 regions; 63% were female. Median (interquartile range) age at ART initiation was 37 (31-44) in men and 32 (26-39) in women. CD4 measurement initially increased, or remained stable over time until around 2013, but then declined to low levels in some regions (Southern Africa, except South Africa: from 54 to 13%; East Africa 85 to 31%; Central Africa 72 to 20%; West Africa: 91 to 53%; and Latin America: 87 to 56%). Prevalence of CD4<200 declined over time in all regions, but plateaued after 2015 at ≥30%.</p><p><strong>Conclusions: </strong>CD4 measurement has declined sharply in recent years, especially in sub-Saharan Africa. Among those with a CD4, the prevalence of CD4 <200 remains concerningly high. Scaling up CD4 testing and securing adequate funding are urgent priorities.</p>","PeriodicalId":10463,"journal":{"name":"Clinical Infectious Diseases","volume":null,"pages":null},"PeriodicalIF":8.2,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142582447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fatal borealpox in an immunosuppressed patient treated with antivirals and vaccinia immunoglobulin - Alaska, 2023.","authors":"Julia H Rogers, Benjamin Westley, Thomas Mego, Katherine G Newell, John Laurance, Lisa Smith, Jayme Parker, Sarah Y Park, Shivkumar Venkatasubrahmanyam, Nicholas Noll, Sivan Bercovici, Agam K Rao, Andrea M McCollum, Whitni Davidson, William C Carson, Michael B Townsend, Jeffrey B Doty, Christina Hutson, Yu Li, Kimberly Wilkins, Jiusheng Deng, Crystal M Gigante, Panayampalli S Satheshkumar, Alexandra Tuttle, Julian A Villalba, Julu Bhatnagar, Sarah Reagan-Steiner, Louisa J Castrodale, Joseph B McLaughlin","doi":"10.1093/cid/ciae536","DOIUrl":"https://doi.org/10.1093/cid/ciae536","url":null,"abstract":"<p><strong>Background: </strong>Borealpox virus (BRPV, formerly known as Alaskapox virus) is a zoonotic member of the Orthopoxvirus genus first identified in a person in 2015. In the six patients with infection previously observed BRPV involved mild, self-limiting illness. We report the first fatal BRPV infection in an immunosuppressed patient.</p><p><strong>Methods: </strong>A man aged 69 years from Alaska's Kenai Peninsula was receiving anti-CD20 therapy for chronic lymphocytic leukemia. He presented to care for a tender, red papule in his right axilla with increasing induration and pain. The patient failed to respond to multiple prescribed antibiotic regimens and was hospitalized 65 days postsymptom onset for progression of presumed infectious cellulitis. BRPV was eventually detected through orthopoxvirus real-time polymerase chain reaction testing of mucosal swabs. He received combination antiviral therapy, including 21 days of intravenous tecovirimat, intravenous vaccinia immunoglobulin, and oral brincidofovir. Serial serology was conducted on specimens obtained posttreatment initiation.</p><p><strong>Findings: </strong>The patient's condition initially improved with plaque recession, reduced erythema, and epithelization around the axillary lesion beginning one-week post-therapy. He later exhibited delayed wound healing, malnutrition, acute renal failure, and respiratory failure. He died 138 days postsymptom onset. Serologic testing revealed no evidence the patient generated a humoral immune response. No secondary cases were detected.</p><p><strong>Conclusion: </strong>This report demonstrates that BRPV can cause overwhelming disseminated infection in certain immunocompromised patients. Based on the patient's initial response, early BRPV identification and antiviral therapies might have been beneficial. These therapies, in combination with optimized immune function, should be considered for patients at risk for manifestations of BRPV.</p>","PeriodicalId":10463,"journal":{"name":"Clinical Infectious Diseases","volume":null,"pages":null},"PeriodicalIF":8.2,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142582445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Long-term dynamics of measles virus-specific neutralizing antibodies in children vaccinated before 12 months of age.","authors":"Maaike van der Staak, Hinke I Ten Hulscher, Alina M Nicolaie, Gaby P Smits, Rik L de Swart, Jelle de Wit, Nynke Y Rots, Robert S van Binnendijk","doi":"10.1093/cid/ciae537","DOIUrl":"https://doi.org/10.1093/cid/ciae537","url":null,"abstract":"<p><strong>Background: </strong>Measles is a highly contagious disease presenting a significant risk for unvaccinated infants and adults. Measles vaccination under the age of 12 months provides early protection, but has also been associated with blunting of antibody responses to subsequent measles vaccinations and assumed to have lower vaccine effectiveness.</p><p><strong>Methods: </strong>Our study included children who received an early measles, mumps and rubella (MMR) vaccination between 6 and 12 months of age (n=79, given in addition to the regular MMR vaccination schedule at 14 months and 9 years) and a group without additional early vaccination (n=44). We evaluated measles virus (MeV)-specific neutralizing antibodies before vaccination at 14 months and up to 6 years thereafter using a plaque reduction neutralization test according to the standard set by the WHO.</p><p><strong>Results: </strong>We show a significant association between age of first MMR and MeV-specific neutralizing antibody levels later in life. Although most children who received early vaccination seroconverted after the first dose, children vaccinated before 8·5 months of age exhibited a markedly faster antibody decay and lost their protective neutralizing antibody levels over 6 years.</p><p><strong>Conclusions: </strong>Routine vaccination of infants under 8·5 months of age may lead to blunted MeV-specific antibody responses to subsequent MMR vaccination. Early MMR vaccination should only be considered during measles outbreaks or in other situations of increased risk of MeV infection.</p>","PeriodicalId":10463,"journal":{"name":"Clinical Infectious Diseases","volume":null,"pages":null},"PeriodicalIF":8.2,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142567612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}