Lancet Microbe最新文献

{"title":"Molecular features of the serological IgG repertoire elicited by egg-based, cell-based, or recombinant haemagglutinin-based seasonal influenza vaccines: a comparative, prospective, observational cohort study","authors":"Juyeon Park PhD , Foteini Bartzoka PhD , Troy von Beck PhD , Zhu-Nan Li PhD , Margarita Mishina BSc , Luke S Hebert BSc , Jessica Kain MSc , Feng Liu PhD , Suresh Sharma PhD , Weiping Cao PhD , Devon J Eddins PhD , Amrita Kumar PhD , Jin Eyun Kim PhD , Justin S Lee PhD , Yuanyuan Wang PhD , Evan A Schwartz PhD , Axel F Brilot PhD , Ed Satterwhite PhD , Dalton M Towers BSc , Eric McKnight BSc , George Georgiou Prof","doi":"10.1016/j.lanmic.2024.06.002","DOIUrl":"10.1016/j.lanmic.2024.06.002","url":null,"abstract":"<div><h3>Background</h3><div>Egg-based inactivated quadrivalent seasonal influenza vaccine (eIIV4), cell culture-based inactivated quadrivalent seasonal influenza vaccine (ccIIV4), and recombinant haemagglutinin (HA)-based quadrivalent seasonal influenza vaccine (RIV4) have been licensed for use in the USA. In this study, we used antigen-specific serum proteomics analysis to assess how the molecular composition and qualities of the serological antibody repertoires differ after seasonal influenza immunisation by each of the three vaccines and how different vaccination platforms affect the HA binding affinity and breadth of the serum antibodies that comprise the polyclonal response.</div></div><div><h3>Methods</h3><div>In this comparative, prospective, observational cohort study, we included female US health-care personnel (mean age 47·6 years [SD 8]) who received a single dose of RIV4, eIIV4, or ccIIV4 during the 2018–19 influenza season at Baylor Scott & White Health (Temple, TX, USA). Eligible individuals were selected based on comparable day 28 serum microneutralisation titres and similar vaccination history. Laboratory investigators were blinded to assignment until testing was completed. The preplanned exploratory endpoints were assessed by deconvoluting the serological repertoire specific to A/Singapore/INFIMH-16–0019/2016 (H3N2) HA before (day 0) and after (day 28) immunisation using bottom-up liquid chromatography–mass spectrometry proteomics (referred to as Ig-Seq) and natively paired variable heavy chain–variable light chain high-throughput B-cell receptor sequencing (referred to as BCR-Seq). Features of the antigen-specific serological repertoire at day 0 and day 28 for the three vaccine groups were compared. Antibodies identified with high confidence in sera were recombinantly expressed and characterised in depth to determine the binding affinity and breadth to time-ordered H3 HA proteins.</div></div><div><h3>Findings</h3><div>During September and October of the 2018–19 influenza season, 15 individuals were recruited and assigned to receive RIV4 (n=5), eIIV4 (n=5), or ccIIV4 (n=5). For all three cohorts, the serum antibody repertoire was dominated by back-boosted antibody lineages (median 98% [95% CI 88–99]) that were present in the serum before vaccination. Although vaccine platform-dependent differences were not evident in the repertoire diversity, somatic hypermutation, or heavy chain complementarity determining region 3 biochemical features, antibodies boosted by RIV4 showed substantially higher binding affinity to the vaccine H3/HA (median half-maximal effective concentration [EC50] to A/Singapore/INFIMH-16–0019/2016 HA: 0·037 μg/mL [95% CI 0·012–0·12] for RIV4; 4·43 μg/mL [0·030–100·0] for eIIV4; and 18·50 μg/mL [0·99–100·0] μg/mL for ccIIV4) and also the HAs from contemporary H3N2 strains than did those elicited by eIIV4 or ccIIV4 (median EC50 to A/Texas/50/2012 HA: 0·037 μg/mL [0·017–0·32] for RIV4; 1·10 μg/mL [0·045–100] fo","PeriodicalId":46633,"journal":{"name":"Lancet Microbe","volume":"6 2","pages":"Article 100935"},"PeriodicalIF":20.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142819554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effectiveness of the primary Bacillus Calmette-Guérin vaccine against the risk of Mycobacterium tuberculosis infection and tuberculosis disease: a meta-analysis of individual participant data","authors":"Puck T Pelzer MSc , Logan Stuck PhD , Leonardo Martinez PhD , Alexandra S Richards PhD , Carlos Acuña-Villaorduña MD , Prof Naomi E Aronson MD , Maryline Bonnet PhD , Anna C Carvalho PhD , Prof Pei-Chun Chan PhD , Prof Li-Min Huang PhD , Chi-Tai Fang PhD , Prof Gavin Churchyard PhD , Helena del Corral-Londoño PhD , Manjula Datta MSc , Marcos A Espinal MD , Prof Katherine Fielding PhD , Andrew J Fiore-Gartland PhD , Alberto Garcia-Basteiro PhD , Prof Willem Hanekom PhD , Mark Hatherill MD , Prof Frank G J Cobelens PhD","doi":"10.1016/j.lanmic.2024.100961","DOIUrl":"10.1016/j.lanmic.2024.100961","url":null,"abstract":"<div><h3>Background</h3><div>Tuberculosis vaccine trials using disease as the primary endpoint are large, time consuming, and expensive. An earlier immunological measure of the protection against disease would accelerate tuberculosis vaccine development. We aimed to assess whether the effectiveness of the Bacillus Calmette-Guérin (BCG) vaccine for prevention of <em>Mycobacterium tuberculosis</em> infection was consistent with that for prevention of tuberculosis disease.</div></div><div><h3>Methods</h3><div>We conducted an individual participant data (IPD) meta-analysis on experimental and observational longitudinal studies before April 6, 2018, identified through systematic reviews, known to us through expert knowledge in the field, reporting on BCG vaccination status, <em>M tuberculosis</em> infection test (QuantiFERON IFN-γ release assay [IGRA] and tuberculin skin test [TST]), and tuberculosis incidence. Cohort studies were included only for countries with a mandatory neonatal BCG vaccination policy. Exclusion criteria were previous or current tuberculosis disease, HIV infection, tuberculosis preventive treatment usage, and for household contacts, a positive baseline IGRA or TST test and young children aged 0–2 years; for randomised controlled trials, TST results within 2 years after random assignation were excluded. We contacted the investigators of the identified studies to provide IPD. We compared the protective efficacy of the BCG vaccine against <em>M tuberculosis</em> infection with that against tuberculosis disease using mixed-effects, multivariable proportional hazards modelling, by study type, <em>M tuberculosis</em> infection test (IGRA and TST), cutoff for defining test positivity, age, sex, and latitude.</div></div><div><h3>Findings</h3><div>We identified 79 studies eligible for full screening and of these, IPD datasets from 14 studies were included in our analysis: 11 household contact studies (29 147 participants), two adolescent cohort studies (11 368 participants), and one randomised controlled trial (2963 participants). Among 28 188 participants we found no protection by the BCG vaccine against TST conversion regardless of cutoff in any type of study. Among 1491 household contacts, but not among 5644 adolescents, the BCG vaccine protected against QuantiFERON conversion at the primary cutoff of 0·7 IU/mL or more with the adjusted hazard ratio (0·65, 95% CI 0·51–0·82) being consistent with that for protection against disease (0·68, 0·18–2·59). Protection against QuantiFERON conversion at cutoff of 0·35 IU/mL or more (0·64, 0·51–0·81) was similar.</div></div><div><h3>Interpretation</h3><div>Protection from the BCG vaccination against <em>M tuberculosis</em> infection, measured as QuantiFERON conversion, is inconsistent across different groups. Among groups with recent household exposure, QuantiFERON conversion is consistent with protection against disease and could be evaluated as a proxy for disease in tuberculosis vaccine trials","PeriodicalId":46633,"journal":{"name":"Lancet Microbe","volume":"6 2","pages":"Article 100961"},"PeriodicalIF":20.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142878320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Brain microbiome: is it all in our heads?","authors":"The Lancet Microbe","doi":"10.1016/j.lanmic.2025.101075","DOIUrl":"10.1016/j.lanmic.2025.101075","url":null,"abstract":"","PeriodicalId":46633,"journal":{"name":"Lancet Microbe","volume":"6 2","pages":"Article 101075"},"PeriodicalIF":20.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143081414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Genomic epidemiology of Salmonella: the need to consider vaccination history and nutritional status in resistance transmission studies","authors":"lianwei Zhou , Minye Wang , Wenbo Li","doi":"10.1016/j.lanmic.2024.101011","DOIUrl":"10.1016/j.lanmic.2024.101011","url":null,"abstract":"","PeriodicalId":46633,"journal":{"name":"Lancet Microbe","volume":"6 2","pages":"Article 101011"},"PeriodicalIF":20.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142510189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Data for action: the crucial role of hospitals in controlling Clostridioides difficile infection in England","authors":"Akaninyene Otu , Dimple Chudasama , Russell Hope , Dakshika Jeyaratnam","doi":"10.1016/j.lanmic.2024.100991","DOIUrl":"10.1016/j.lanmic.2024.100991","url":null,"abstract":"","PeriodicalId":46633,"journal":{"name":"Lancet Microbe","volume":"6 2","pages":"Article 100991"},"PeriodicalIF":20.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142298317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The spread of molecular markers of artemisinin partial resistance and diagnostic evasion in Eritrea: a retrospective molecular epidemiology study","authors":"Selam Mihreteab BSc , Karen Anderson CBLT , Irene Molina de la Fuente MD , Prof Colin J. Sutherland PhD , David Smith DLT , Jane Cunningham MD , Khalid B. Beshir PhD , Qin Cheng PhD","doi":"10.1016/S2666-5247(24)00172-1","DOIUrl":"10.1016/S2666-5247(24)00172-1","url":null,"abstract":"<div><h3>Background</h3><div>Eritrea was the first African country to discontinue the use of histidine rich protein 2 (HRP2)-detecting rapid diagnostic tests (RDTs) for malaria diagnosis following reports of a high prevalence of <em>pfhrp2</em>/<em>3-</em>deleted <em>Plasmodium falciparum</em> parasites causing false-negative results in the country. Eritrea was also the first African country to report partial artemisinin resistance due to the <em>P falciparum</em> kelch13 (<em>pfk13</em>) Arg622Ile mutation. We aimed to characterise the spatial distribution of <em>pfk13</em> mutants and their interactions with <em>pfhrp2/3</em> deletions in Eritrea and to assess the role of the use of HRP2-detecting RDTs and antimalarial (artesunate–amodiaquine) therapy in the spread of the two variants.</div></div><div><h3>Methods</h3><div>We conducted a retrospective molecular epidemiological analysis of <em>pfk13</em> mutations and <em>pfhrp2/3</em> deletions in existing <em>P falciparum</em>-infected blood samples collected as part of previous <em>pfhrp2/3</em> deletion and severe malaria studies. Samples were collected in March, 2016 and between September, 2018, and January, 2020, from symptomatic patients seeking care at 15 health centres in four administration zones (Semenawi Keyih Bahri, Gash Barka, Anseba, and Debub) in Eritrea. A fragment spanning the propeller region of <em>pfk13</em> was amplified from samples and sequenced using Sanger sequencing or targeted amplicon sequencing to identify genetic mutations. Deletions of <em>pfhrp2/3</em> genes in samples were determined using multiplex quantitative PCR. Parasite haplotypes and genetic relatedness of parasite haplotypes were determined previously using microsatellite marker typing. The primary objective was to determine the prevalence of <em>pfk13</em> mutations at health centres and administrative zones. The secondary objective was to investigate whether <em>pfk13</em> mutants and <em>pfhrp2/3</em> deleted parasites converge.</div></div><div><h3>Findings</h3><div>We sequenced 50 samples collected in March, 2016 from the Semenawi Keyih Bahri zone and identified no <em>pfk13</em> mutations. By contrast, in 587 samples included in this study that were collected from health centres in Gash Barka, Anseba, and Debub in 2018–20, we detected five different single non-synonymous mutations: Glu605Lys, Arg622Ile, Asn657Lys, Lys658Glu, and Ser679Leu. The most prevalent mutation was <em>pfk13</em> Arg622Ile, which was detected in samples collected from all nine health centres where more than five samples were available across all three administration zones, with an overall prevalence of 11·9% (70 of 587 samples; range 5·9–28·0%). We identified 22 unique <em>pfk13</em> Arg622Ile mutant haplotypes among 26 samples tested, of which 13 (59·1%) were genetically related, whereas the remaining nine (40·9%) were not. The prevalence of <em>pfk13</em> Arg622Ile was significantly higher in parasites with a single <em>pfhrp","PeriodicalId":46633,"journal":{"name":"Lancet Microbe","volume":"6 2","pages":"Article 100930"},"PeriodicalIF":20.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142802537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Global epidemiological trend of Klebsiella pneumoniae ST340: emergence of subclade KL15 co-producing K pneumoniae carbapenemase-2 and New Delhi metallo-β-lactamase-7 in the Americas","authors":"Felipe Vásquez-Ponce , Marco Vianello , Johana Becerra , Jesus G M Pariona , Karine Dantas , Gregory Melocco , Guilherme M Oliveira , Fernanda Esposito , Nilton Lincopan","doi":"10.1016/j.lanmic.2024.100990","DOIUrl":"10.1016/j.lanmic.2024.100990","url":null,"abstract":"","PeriodicalId":46633,"journal":{"name":"Lancet Microbe","volume":"6 2","pages":"Article 100990"},"PeriodicalIF":20.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142298321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rapidly evolving recombinant monkeypox virus strains compound the challenges of the 2024 mpox outbreak","authors":"Ting-Yu Yeh , Patrick J Feehley , Michael C Feehley , Chieh-Fan Chen , Tung-Yuan Tsai , Hsiang-Lan Cheng , Gregory P Contreras","doi":"10.1016/j.lanmic.2024.101017","DOIUrl":"10.1016/j.lanmic.2024.101017","url":null,"abstract":"","PeriodicalId":46633,"journal":{"name":"Lancet Microbe","volume":"6 2","pages":"Article 101017"},"PeriodicalIF":20.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142606849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Artemether–lumefantrine–amodiaquine or artesunate–amodiaquine combined with single low-dose primaquine to reduce Plasmodium falciparum malaria transmission in Ouélessébougou, Mali: a five-arm, phase 2, single-blind, randomised controlled trial","authors":"Almahamoudou Mahamar PhD , Leen N Vanheer MD , Merel J Smit MD , Koualy Sanogo MD , Youssouf Sinaba MD , Sidi M Niambele PharmD , Makonon Diallo MD , Oumar M Dicko MD , Richard S Diarra MD , Seydina O Maguiraga MD , Ahamadou Youssouf PharmD , Adama Sacko MS , Sekouba Keita MS , Siaka Samake PharmD , Adama Dembele MS , Karina Teelen , Yahia Dicko MD , Sekou F Traore PhD , Prof Arjen Dondorp MD , Prof Chris Drakeley PhD , Prof Alassane Dicko MD","doi":"10.1016/j.lanmic.2024.100966","DOIUrl":"10.1016/j.lanmic.2024.100966","url":null,"abstract":"<div><h3>Background</h3><div>Triple artemisinin-based combination therapies (TACTs) can delay the spread of antimalarial drug resistance. Artesunate–amodiaquine is widely used for uncomplicated <em>Plasmodium falciparum</em> malaria. We therefore aimed to determine the safety and efficacy of artemether–lumefantrine–amodiaquine and artesunate–amodiaquine with and without single low-dose primaquine for reducing gametocyte carriage and transmission to mosquitoes.</div></div><div><h3>Methods</h3><div>We did a five-arm, single-blind, phase 2 randomised controlled trial at the Ouélessébougou Clinical Research Unit of the Malaria Research and Training Centre of the University of Sciences, Techniques and Technologies of Bamako in Mali. Eligible participants were aged 10–50 years, with asymptomatic <em>P falciparum</em> microscopy-detected gametocyte carriage. Eligible participants were randomly allocated (1:1:1:1:1) to receive either artemether–lumefantrine, artemether–lumefantrine–amodiaquine, artemether–lumefantrine–amodiaquine plus primaquine, artesunate–amodiaquine, or artesunate–amodiaquine plus primaquine. Treatment regimens were administered on days 0, 1, and 2; primaquine was given as a single dose on day 0. All staff except the trial pharmacist and participants were masked to the treatment allocation. The primary outcome was the median percentage change in mosquito infection rate between pretreatment and 2 days after treatment initiation, assessed by direct membrane feeding assay. Data were analysed using a per-protocol analysis. This study is registered with <span><span>ClinicalTrials.gov</span><svg><path></path></svg></span>, <span><span>NCT05550909</span><svg><path></path></svg></span>.</div></div><div><h3>Findings</h3><div>Between Oct 16, 2022, and Dec 28, 2022, a total of 1249 individuals were screened; of whom, 100 were enrolled and randomly assigned to one of the five treatment groups (20 per group). Before treatment, 61 (61%) of 100 participants were infectious to mosquitoes, with a median of 7·3% (IQR 3·2 to 23·5) of mosquitoes becoming infected. Among infectious participants, the median percentage reduction in mosquito infection rate between pretreatment and 2 days after treatment was 100% (IQR 100 to 100) in the artemether–lumefantrine (p=0·0018), artemether–lumefantrine–amodiaquine (p=0·0018), and artemether–lumefantrine–amodiaquine plus primaquine (p=0·0009) treatment groups. In the artesunate–amodiaquine group the median percentage reduction in mosquito infection rate was only 32% (IQR –10·9 to 79·4; p=0·19), whereas a 100% median reduction was seen in the artesunate–amodiaquine plus primaquine group (IQR 100 to 100; p=0·0009). At day 2, two (10%) of 20 participants in the artemether–lumefantrine group, two (11%) of 19 in the artemether–lumefantrine–amodiaquine group, and 15 (75%) of 20 in the artesunate–amodiaquine group infected any number of mosquitoes whereas no infected mosquitoes were observed at this timepoint in the groups ","PeriodicalId":46633,"journal":{"name":"Lancet Microbe","volume":"6 2","pages":"Article 100966"},"PeriodicalIF":20.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142865813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Blood transcriptomic analyses do not support SARS-CoV-2 persistence in patients with post-COVID-19 condition with chronic fatigue syndrome","authors":"Amirhossein Rahmati , Shima Shahbaz , Mohammed Osman , Jan Willen Cohen Tervaert , Shokrollah Elahi","doi":"10.1016/j.lanmic.2024.101012","DOIUrl":"10.1016/j.lanmic.2024.101012","url":null,"abstract":"","PeriodicalId":46633,"journal":{"name":"Lancet Microbe","volume":"6 2","pages":"Article 101012"},"PeriodicalIF":20.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142569821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}