Kyra H Grantz, Raghavendran Anantharam, Abraham J Kandathil, Jeffrey Quinn, Jacqueline Astemborski, Gregory D Kirk, Oluwaseun Falade-Nwulia, Javier Cepeda, David L Thomas, Shruti H Mehta, Amy Wesolowski
{"title":"Multiple approaches to genetic sequencing to identify hepatitis C virus reinfection among people who inject drugs","authors":"Kyra H Grantz, Raghavendran Anantharam, Abraham J Kandathil, Jeffrey Quinn, Jacqueline Astemborski, Gregory D Kirk, Oluwaseun Falade-Nwulia, Javier Cepeda, David L Thomas, Shruti H Mehta, Amy Wesolowski","doi":"10.1093/infdis/jiaf235","DOIUrl":"https://doi.org/10.1093/infdis/jiaf235","url":null,"abstract":"The burden of hepatitis C virus (HCV) among persons who inject drugs is determined by dynamics of infection, spontaneous clearance, treatment clearance, treatment failure, and reinfection. Although analysis of HCV sequences is often used to infer the net contribution of these factors, those inferences are complicated by the quasispecies distribution and continued evolution of infection within each host. We used deep sequencing by Nanopore to study sequences of persons with and without self-reported HCV treatment. Even after years of evolution, sequences from the same person were always more similar than sequences from different persons and a Hamming distance threshold of 0.064 reliably differentiated (AUC 0.999) the groups. By comparison to sequences before treatment, identification of unique sequences (distance > 0.064) after treatment reliably identified 8 of 28 instances of post-treatment reinfection. There were multiple causes for finding the same (distance < 0.064) sequence after intended treatment including not commencing or abbreviating treatment, pharmacological treatment failure, or possibly reinfection from same source. These data underscore the value of HCV sequence analysis in understanding viral dynamics among PWID.","PeriodicalId":501010,"journal":{"name":"The Journal of Infectious Diseases","volume":"114 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143979767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Reevaluating the clinical relevance of bacterial vaginosis-associated immune responses in HIV infection.","authors":"Fangli Yu,Pan Ma,Jie Duan","doi":"10.1093/infdis/jiaf227","DOIUrl":"https://doi.org/10.1093/infdis/jiaf227","url":null,"abstract":"","PeriodicalId":501010,"journal":{"name":"The Journal of Infectious Diseases","volume":"121 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143945423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Eméra Alice Bénard,Ana Maria Carceller,Marie-Hélène Mayrand,Jacques Lacroix,Joseph Niyibizi,Louise Laporte,François Audibert,François Coutlée,Helen Trottier,
{"title":"Human Papillomavirus Persistence, Recurrence, and Incidence in Early Childhood.","authors":"Eméra Alice Bénard,Ana Maria Carceller,Marie-Hélène Mayrand,Jacques Lacroix,Joseph Niyibizi,Louise Laporte,François Audibert,François Coutlée,Helen Trottier,","doi":"10.1093/infdis/jiaf213","DOIUrl":"https://doi.org/10.1093/infdis/jiaf213","url":null,"abstract":"BACKGROUNDLittle is known on the vertical transmission of human papillomavirus (HPV) and on the dynamics of HPV among children. Our objective was to determine the risk of HPV recurrence, persistence, and incidence over 2 years of age among children born to HPV-positive mothers.METHODSWe conducted the HERITAGE study among pregnant women recruited between 2010 and 2016 in Canada. HPV DNA testing was done on vaginal samples collected during the first and third trimesters of pregnancy, and on conjunctival, oral, pharyngeal, and genital samples collected in children from birth and at every 3-6 months up to 2 years. We estimated the probability of HPV vertical transmission, and of HPV recurrence, persistence, and incidence among children during follow-up. Time to clear HPV among children was estimated using Kaplan-Meier technique.RESULTSAmong the 422 women with HPV during pregnancy, 390 carried pregnancy to term, and 395 children were born alive including twins/triplets. HPV vertical transmission was estimated at 7.3% (95% confidence interval [CI], 5.0%-10.4%) with a genotype concordance of 85.2%. During the entire follow-up, we observed 91 HPV detections (among 51 children) including 2 recurrent and 1 persistent. Incident genotypes occurred in 26 of the 270 (9.6%) children with valid HPV testing during follow-up. Most HPV infections detected in children cleared with a mean time of 3.9 months (95% CI, 3.6-4.2 months).CONCLUSIONSHPV vertical transmission and incident HPV occasionally occur during infancy, but the risk of persistence or recurrence is overall very low.","PeriodicalId":501010,"journal":{"name":"The Journal of Infectious Diseases","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143945307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Demba Sarr,Alicer K Andrew,Ashish K Shukla,Stephen Mwalimu,Julie M Moore
{"title":"Placental Malaria Induces Oxidative Stress in Human Syncytiotrophoblast.","authors":"Demba Sarr,Alicer K Andrew,Ashish K Shukla,Stephen Mwalimu,Julie M Moore","doi":"10.1093/infdis/jiaf243","DOIUrl":"https://doi.org/10.1093/infdis/jiaf243","url":null,"abstract":"BACKGROUNDPlacental malaria is characterized by the accumulation of Plasmodium falciparum-infected erythrocytes and maternal inflammation in the intervillous spaces of the placenta. These features are associated with placental damage and fetal compromise. However, understanding of the mechanisms that lead to poor pregnancy outcome and interventions targeting excessive host responses to placental malaria are still lacking. The syncytiotrophoblast, a cell of fetal origin, is known to be responsive to malaria-infected erythrocytes as well as the malaria toxin, hemozoin, but its susceptibility to oxidative stress and how this might contribute to placental damage and dysfunction has not yet been directly investigated.METHODSThe characteristics and key drivers of the syncytiotrophoblast response to oxidative stress were investigated using ex vivo human placental tissues and primary trophoblasts isolated from healthy pregnant women. Primary syncytiotrophoblast was exposed to hemozoin and tumor necrosis factor, a critical inflammatory cytokine, to model conditions found in human placental malaria.RESULTSThe data show remarkable lipid peroxidation in human placental samples from a malaria endemic setting and evidence of a modulated antioxidant response at the transcriptional level. Likewise, primary human syncytiotrophoblast exposed to hemozoin, tumor necrosis factor, and tumor necrosis factor combined with hemozoin in vitro exhibited increased markers of an anti-oxidative response, and, with hemozoin alone, oxidation of lipids and DNA.CONCLUSIONSThese results suggest that oxidative stress in syncytiotrophoblast is promoted by both hemozoin exposure and maternal inflammatory responses to placental malaria and contribute to an increased understanding of placental dysfunction and compromise in this infection.","PeriodicalId":501010,"journal":{"name":"The Journal of Infectious Diseases","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143945422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jessica Robinson-Papp, Mitali Mehta, Bridget R Mueller, Niyati Neupane, Zhan Zhao, Gabriela Cedillo, Kaitlyn Coyle, Maya Campbell, Mary Catherine George, Emma K T Benn, Gina Lee, Jack Semler
{"title":"Gastrointestinal Dysmotility, Autonomic Function and Small Intestinal Bacterial Overgrowth among People with Well-Controlled HIV","authors":"Jessica Robinson-Papp, Mitali Mehta, Bridget R Mueller, Niyati Neupane, Zhan Zhao, Gabriela Cedillo, Kaitlyn Coyle, Maya Campbell, Mary Catherine George, Emma K T Benn, Gina Lee, Jack Semler","doi":"10.1093/infdis/jiaf238","DOIUrl":"https://doi.org/10.1093/infdis/jiaf238","url":null,"abstract":"Introduction Gastrointestinal dysfunction, including microbiome changes and increased bacterial translocation across a compromised gastrointestinal barrier plays a role in the chronic systemic inflammation experienced by people with HIV (PWH). It is unknown whether autonomic neuropathy (AN) may contribute to these mechanisms by altering gastrointestinal motility. Methods This is a cross-sectional study of 100 PWH and 89 controls. All participants underwent assessment of gastrointestinal transit times using a wireless motility capsule (WMC). All PWH and a subset of controls also underwent: a standardized battery of autonomic function tests summarized as the Modified Composite Autonomic Severity Score (MCASS) and its adrenergic, cardiovagal and sudomotor sub-scores, breath testing for small intestinal bacterial overgrowth (SIBO), and the Patient Assessment of Upper Gastrointestinal Disorders Symptoms (PAGI-SYM) and Composite Autonomic Symptom Score 31 (COMPASS-31) questionnaires. Results Compared to controls, PWH displayed shorter gastric emptying times (GET) and longer small bowel and colonic transit times (SBTT, CTT). Among PWH, GET was associated with PAGI-SYM score. The MCASS and its sudomotor sub-score (reflecting peripheral sympathetic function) were associated with SBTT but not GET or CTT. PWH with prolonged SBTT (>6h) were more likely to have SIBO. Conclusion Gastrointestinal motility is altered in PWH. This study provides preliminary evidence that changes in autonomic function may influence SBTT in PWH and that prolonged SBTT may contribute to the development of SIBO. Future studies are needed to more fully elucidate the pathophysiologic links between HIV-associated AN, altered gastrointestinal motility, the gastrointestinal microbiome, chronic inflammation, and resulting morbidity and mortality among PWH.","PeriodicalId":501010,"journal":{"name":"The Journal of Infectious Diseases","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143940331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kartikeya Cherabuddi, Massimiliano S Tagliamonte, John A Lednicky, David A Ostrov, Tracey L Moquin, Vishal Kaushik Thoomkuntla, Brian Bourgeois, Vidya Sagar Kollu, Nicole M Iovine, Paul D Myers, Kuttichantran Subramaniam, Marco Salemi, J Glenn Morris
{"title":"A case-cluster of aseptic meningitis associated with a newly identified recombinant echovirus6/CoxsackievirusB1 enterovirus","authors":"Kartikeya Cherabuddi, Massimiliano S Tagliamonte, John A Lednicky, David A Ostrov, Tracey L Moquin, Vishal Kaushik Thoomkuntla, Brian Bourgeois, Vidya Sagar Kollu, Nicole M Iovine, Paul D Myers, Kuttichantran Subramaniam, Marco Salemi, J Glenn Morris","doi":"10.1093/infdis/jiaf247","DOIUrl":"https://doi.org/10.1093/infdis/jiaf247","url":null,"abstract":"A daycare teacher presented with complaints of headache, neck stiffness, and fever. Because of initial concerns about meningococcal meningitis, families of daycare attendees were notified and 10 children from the daycare presented for evaluation. CSF from the teacher and nasal swabs from four febrile children were RT-PCR positive for enterovirus. A novel recombinant enterovirus was cultured from the teacher’s CSF and from two of the nasal swabs. The amino-terminal portion of the recombinant virus was derived from an Echovirus E6 with the carboxy-terminal portion originating from a Coxsackievirus B1; recombinant segments were most closely related to similar segments from strains isolated in France. Recombination occurred within the C-2 gene associated with virus replication and virion morphogenesis. Structural modeling predicted that the recombinant protein was capable of forming hexameric and heptameric assemblies. Our data highlight the potential for recombination among enteroviruses, leading to modifications within viral proteins which may impact virulence.","PeriodicalId":501010,"journal":{"name":"The Journal of Infectious Diseases","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143946065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jessica H Rubens,Jacqueline K Brockhurst,Shristi Ghimire,Jinjin Wu,Liting Liu,Jason S Villano,Rebecca J Loomis,Alexandrine Derrien-Colemyn,Tracy J Ruckwardt,Barney S Graham,Michael W Watson,Guillaume B E Stewart-Jones,Diane E Griffin
{"title":"Safety, immunogenicity, and protective efficacy in rhesus macaques of a novel recombinant hemagglutinin protein measles virus vaccine.","authors":"Jessica H Rubens,Jacqueline K Brockhurst,Shristi Ghimire,Jinjin Wu,Liting Liu,Jason S Villano,Rebecca J Loomis,Alexandrine Derrien-Colemyn,Tracy J Ruckwardt,Barney S Graham,Michael W Watson,Guillaume B E Stewart-Jones,Diane E Griffin","doi":"10.1093/infdis/jiaf244","DOIUrl":"https://doi.org/10.1093/infdis/jiaf244","url":null,"abstract":"BACKGROUNDMeasles-Mumps-Rubella (MMR) is an effective live-virus vaccine against measles but is poorly immunogenic in infants and contraindicated for pregnant and immunocompromised persons.METHODSWe evaluated immunogenicity and protective efficacy of a novel recombinant dimeric MeV hemagglutinin protein vaccine (rMeV) in rhesus macaques. Macaques (n=4) in four experimental groups were injected at days 0 and 42 with: 1) MMR/MMR; 2) rMeV/rMeV; 3) MMR/rMeV; 4) PBS/PBS and challenged intratracheally with wild type MeV 8-9 months later. Blood, nasopharyngeal (NP), bronchoalveolar lavage (BAL), bone marrow (BM), and lymph nodes (LN) were sampled.RESULTSAll macaques that received a MeV-containing vaccine developed MeV-specific binding and neutralizing antibody titers that were similar at 169 days post-vaccination, regardless of experimental group. After challenge, all unvaccinated macaques had MeV detected in samples of blood, NP, BAL, BM and LN, and one developed a rash. No vaccinated macaque developed a rash or had detectable MeV in PBMC, BM, or NP cells. However, MeV and MeV RNA were detected in BAL samples in all experimental groups with the most virus and longest detection in rMeV-vaccinated animals.CONCLUSIONSImmunization with rMeV protected macaques from rash, viremia and systemic virus spread. Therefore, rMeV is protective against MeV disease and a promising option for patients unable to receive or respond to MMR.","PeriodicalId":501010,"journal":{"name":"The Journal of Infectious Diseases","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143945194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sophie Zhu,Joshua Quint,Tomás León,Monica Sun,Nancy J Li,Cynthia Yen,Mark W Tenforde,Brendan Flannery,Seema Jain,Robert Schechter,Cora Hoover,Erin L Murray
{"title":"Estimating Influenza Vaccine Effectiveness Against Laboratory-Confirmed Influenza Using Linked Public Health Information Systems, California, 2023-2024 Season.","authors":"Sophie Zhu,Joshua Quint,Tomás León,Monica Sun,Nancy J Li,Cynthia Yen,Mark W Tenforde,Brendan Flannery,Seema Jain,Robert Schechter,Cora Hoover,Erin L Murray","doi":"10.1093/infdis/jiaf248","DOIUrl":"https://doi.org/10.1093/infdis/jiaf248","url":null,"abstract":"BACKGROUNDMandatory public health reporting of influenza laboratory results and vaccine doses administered in the state of California can provide estimates of seasonal influenza vaccine effectiveness (VE).METHODSWe analyzed linked influenza immunization registry and laboratory reporting data among California residents aged ≥6 months tested for influenza during the 2023-24 influenza season (October 2023-June 2024). Individually linked laboratory reporting included influenza molecular or viral culture test result. Odds Ratios (OR) and 95% confidence intervals (CI) contrasted odds of documented 2023-2024 vaccination among persons with influenza-positive tests versus persons with negative influenza tests. VE was calculated as (1 - adjusted OR) x 100 using logistic regression, adjusting for patient age, race, ethnicity, week of specimen collection, and county of residence.RESULTSAmong 1,382,142 laboratory reports, 129,253 persons (9%) (129,253) had a positive influenza test result, of whom 415,390 (30%) had documented influenza vaccination ≥14 days before test date. VE against laboratory-confirmed influenza was 41% (95% CI, 40%-42%). VE was 32% (95% CI, 31%-33%) against influenza A, 68% (95% CI, 66%-69%) against influenza B, and 26% (95% CI, 24%-29%) among adults aged ≥65 years.CONCLUSIONSInfluenza vaccination was associated with prevention of laboratory-confirmed influenza. Results demonstrated feasibility of assessing seasonal influenza vaccine effectiveness using linked immunization and laboratory data from public health surveillance systems.","PeriodicalId":501010,"journal":{"name":"The Journal of Infectious Diseases","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143945308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jack McHugh,Supavit Chesdachai,Murray Dunsirn,Nancy Wengenack,Paschalis Vergidis
{"title":"Increasing Fluconazole Resistance in Candida parapsilosis: A 10-Year Analysis of Blood Culture Isolates at a US Reference Laboratory (2015-2024).","authors":"Jack McHugh,Supavit Chesdachai,Murray Dunsirn,Nancy Wengenack,Paschalis Vergidis","doi":"10.1093/infdis/jiaf249","DOIUrl":"https://doi.org/10.1093/infdis/jiaf249","url":null,"abstract":"Antifungal susceptibility testing among 1,740 Candida parapsilosis blood isolates submitted to a U.S. reference laboratory (2015-2024) revealed a significant increase in fluconazole resistance from 8.2% to 20.3% (odds ratio [OR] per year: 1.13; 95% confidence interval [CI]: 1.06-1.20; p<0.001), with notable acceleration since 2021. Voriconazole resistance remained stable over this period. Micafungin resistance was rare, but intermediate susceptibility significantly increased, especially after 2021 (OR per year: 1.42; 95% CI: 1.25-1.63; p<0.001). These findings highlight important recent shifts in antifungal susceptibility among C. parapsilosis isolates, emphasizing the need for ongoing surveillance and stewardship.","PeriodicalId":501010,"journal":{"name":"The Journal of Infectious Diseases","volume":"74 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143945430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}