Influenza and Other Respiratory Viruses最新文献

{"title":"Genomic Analysis and Tracking of SARS-CoV-2 Variants in Gwangju, South Korea, From 2020 to 2022","authors":"Yeong-Un Lee,&nbsp;Kwangho Lee,&nbsp;Hongsu Lee,&nbsp;Jung Wook Park,&nbsp;Sun-Ju Cho,&nbsp;Ji-Su Park,&nbsp;Jeongeun Mun,&nbsp;Sujung Park,&nbsp;Cheong-mi Lee,&nbsp;Juhye Lee,&nbsp;Jinjong Seo,&nbsp;Yonghwan Kim,&nbsp;Sun-Hee Kim,&nbsp;Yoon-Seok Chung","doi":"10.1111/irv.13350","DOIUrl":"10.1111/irv.13350","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Since severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was first reported in Wuhan, China, in December 2019, it has spread rapidly, and many coronavirus disease (COVID-19) cases have occurred in Gwangju, South Korea. Viral mutations following the COVID-19 epidemic have increased interest in the characteristics of epidemics in this region, and pathogen genetic analysis is required for infection control and prevention.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>In this study, SARS-CoV-2 whole-genome analysis was performed on samples from patients with COVID-19 in Gwangju from 2020 to 2022 to identify the trends in COVID-19 prevalence and to analyze the phylogenetic relationships of dominant variants. B.41 and B.1.497 prevailed in 2020, the early stage of the COVID-19 outbreak; then, B.1.619.1 mainly occurred until June 2021. B.1.617.2, classified as sublineages AY.69 and AY.122, occurred continuously from July to December 2021. Since strict measures to strengthen national quarantine management had been implemented in South Korea until this time, the analysis of mutations was also able to infer the epidemiological relationship between infection transmission routes. Since the first identification of the Omicron variant in late December 2021, the spread of infection has been very rapid, and weekly whole-genome analysis of specimens has enabled us to monitor new Omicron sublineages occurring in Gwangju.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Our study suggests that conducting regional surveillance in addition to nation-level genomic surveillance will enable more rapid and detailed variant surveillance, which will be helpful in the overall prevention and management of infectious diseases.</p>\u0000 </section>\u0000 </div>","PeriodicalId":13544,"journal":{"name":"Influenza and Other Respiratory Viruses","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11196956/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141456527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"How Does the Burden of Respiratory Syncytial Virus Compare to Influenza in Spanish Adults?","authors":"Federico Martinón-Torres,&nbsp;Clara Gutierrez,&nbsp;Ana Cáceres,&nbsp;Karin Weber,&nbsp;Antoni Torres","doi":"10.1111/irv.13341","DOIUrl":"10.1111/irv.13341","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Respiratory syncytial virus (RSV) and influenza infections cause significant annual morbidity and mortality worldwide in at-risk populations. This study is aimed at assessing hospital burden and healthcare resource utilization (HRU) of RSV and influenza in adults in Spain.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Data were obtained from the Projected Hospitalisation Database of inpatient episodes (ages: younger adults 18–50 and 51–64 years; older adults 65–74, 75–84, and ≥ 85 years) during 2015, 2017, and 2018 in Spanish public hospitals. Incidence, mean hospitalization, and HRU assessments, including length of stay (LOS), intensive care unit (ICU) usage, and age-standardized mortality rates, were collected and stratified by age group, with analyses focusing on the adult population (≥ 18 years old).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Mean hospitalization rate in the population across all years was lower in individuals with RSV versus influenza (7.2/100,000 vs. 49.7/100,000 individuals). ICU admissions and median LOS were similar by age group for both viruses. Age-standardized mortality was 6.3/100,000 individuals and 6.1/100,000 individuals in patients with RSV and influenza, respectively, and mortality rates were similar in older adults (≥ 65 years) for both viruses.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>RSV and influenza infection were associated with considerable HRU. There is a substantial disease burden for RSV infection in older adults ≥ 65 years. While RSV hospitalization rates in adults reported here appeared lower than influenza, RSV is still underdiagnosed in the hospital setting and its incidence might be similar to, or higher than, influenza.</p>\u0000 </section>\u0000 </div>","PeriodicalId":13544,"journal":{"name":"Influenza and Other Respiratory Viruses","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11194680/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141456528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Monitoring Influenza C and D Viruses in Patients With Respiratory Diseases in Japan, January 2018 to March 2023","authors":"Kohei Shimizu,&nbsp;Chiharu Kawakami,&nbsp;Yoko Matsuzaki,&nbsp;Seiichiro Fujisaki,&nbsp;Shiho Nagata,&nbsp;Hiroko Morita,&nbsp;Kayo Watanabe,&nbsp;Hideka Miura,&nbsp;Tomoko Momoki,&nbsp;Miwako Saikusa,&nbsp;Hiroki Ozawa,&nbsp;Makoto Kumazaki,&nbsp;Shuzo Usuku,&nbsp;Nobuko Tanaka,&nbsp;Ryuichi Senda,&nbsp;Ichiro Okubo,&nbsp;Shinji Watanabe,&nbsp;Hideki Hasegawa,&nbsp;Yoshihiro Kawaoka,&nbsp;Emi Takashita","doi":"10.1111/irv.13345","DOIUrl":"10.1111/irv.13345","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Influenza viruses can cause zoonotic infections that pose public health risks. Surveillance of influenza A and B viruses is conducted globally; however, information on influenza C and D viruses is limited. Longitudinal monitoring of influenza C virus in humans has been conducted in several countries, but there has been no long-term monitoring of influenza D virus in humans. The public health risks associated with the influenza D virus therefore remain unknown.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>We established a duplex real-time RT-PCR to detect influenza C and D viruses and analyzed respiratory specimens collected from 2144 patients in Japan with respiratory diseases between January 2018 and March 2023. We isolated viruses and conducted hemagglutination inhibition tests to examine antigenicity and focus reduction assays to determine susceptibility to the cap-dependent endonuclease inhibitor baloxavir marboxil.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>We detected three influenza C viruses belonging to the C/Kanagawa- or C/Sao Paulo-lineages, which recently circulated globally. None of the specimens was positive for the influenza D virus. The C/Yokohama/1/2022 strain, isolated from the specimen with the highest viral RNA load and belonging to the C/Kanagawa-lineage, showed similar antigenicity to the reference C/Kanagawa-lineage strain and was susceptible to baloxavir.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Our duplex real-time RT-PCR is useful for the simultaneous detection of influenza C and D viruses from the same specimen. Adding the influenza D virus to the monitoring of the influenza C virus would help in assessing the public health risks posed by this virus.</p>\u0000 </section>\u0000 </div>","PeriodicalId":13544,"journal":{"name":"Influenza and Other Respiratory Viruses","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11196370/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141456530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Late-Season Influenza Vaccine Effectiveness Against Medically Attended Outpatient Illness, United States, December 2022–April 2023","authors":"Jessie R. Chung,&nbsp;Philip Shirk,&nbsp;Manjusha Gaglani,&nbsp;Manohar B. Mutnal,&nbsp;Mary Patricia Nowalk,&nbsp;Krissy Moehling Geffel,&nbsp;Stacey L. House,&nbsp;Tara Curley,&nbsp;Karen J. Wernli,&nbsp;Erika L. Kiniry,&nbsp;Emily T. Martin,&nbsp;Ivana A. Vaughn,&nbsp;Vel Murugan,&nbsp;Efrem S. Lim,&nbsp;Elie Saade,&nbsp;Kiran Faryar,&nbsp;Olivia L. Williams,&nbsp;Emmanuel B. Walter,&nbsp;Ashley M. Price,&nbsp;John R. Barnes,&nbsp;Juliana DaSilva,&nbsp;Rebecca Kondor,&nbsp;Sascha Ellington,&nbsp;Brendan Flannery","doi":"10.1111/irv.13342","DOIUrl":"10.1111/irv.13342","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>The 2022–23 US influenza season peaked early in fall 2022.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Late-season influenza vaccine effectiveness (VE) against outpatient, laboratory-confirmed influenza was calculated among participants of the US Influenza VE Network using a test-negative design.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Of 2561 participants enrolled from December 12, 2022 to April 30, 2023, 91 laboratory-confirmed influenza cases primarily had A(H1N1)pdm09 (6B.1A.5a.2a.1) or A(H3N2) (3C.2a1b.2a.2b). Overall, VE was 30% (95% confidence interval −9%, 54%); low late-season activity precluded estimation for most subgroups.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>2022–23 late-season outpatient influenza VE was not statistically significant. Genomic characterization may improve the identification of influenza viruses that circulate postinfluenza peak.</p>\u0000 </section>\u0000 </div>","PeriodicalId":13544,"journal":{"name":"Influenza and Other Respiratory Viruses","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11194453/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141456529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Adverse Effects Related to Paediatric Influenza Vaccination and Its Influence on Vaccination Acceptability. The FLUTETRA Study: A Survey Conducted in the Region of Murcia, Spain","authors":"Matilde Zornoza Moreno,&nbsp;Jaime Jesús Pérez Martín,&nbsp;María Cruz Gómez Moreno,&nbsp;María del Carmen Valcárcel Gómez,&nbsp;Marta Pérez Martínez,&nbsp;Francisca Isabel Tornel Miñarro","doi":"10.1111/irv.13331","DOIUrl":"https://doi.org/10.1111/irv.13331","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>During the 2022–23 season, three autonomous communities recommended influenza vaccination for all children between 6 and 59 months. The objective is to evaluate the adverse effects associated with the administered influenza vaccines in the Region of Murcia, as well as their influence on the recommendation of the same to acquaintances or repetition in future seasons.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Material and Methods</h3>\u0000 \u0000 <p>Cross-sectional descriptive study with an online questionnaire sent to the parents of vaccinated minors of 6–23 months of age receiving inactivated intramuscular vaccine (IIV) or 24–59 months of age receiving live-attenuated intranasal vaccine (LAIV).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Among 4971 surveys received, the most common adverse effect for LAIV and IIV was runny nose (40.90%) and local pain (31.94%), respectively. Sixty percent of adverse effects lasted ≤ 1 day, and around 10% lasted ≥ 3 days. The interference of adverse effects with the minor's daily life was very infrequent (3.32%), as was the need for visiting the medical office (2.68%). Overall, 96.44% of parents would recommend influenza vaccination to friends and relatives after the experience. Only 3.56% would not recommend it, while 1.68% would not vaccinate their child against influenza again. The most frequently cited reason being adverse effects.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Our study shows the safety of influenza vaccines. Despite the low impact of adverse effects, they influence some parents in their intention to continue vaccinating or recommending it to acquaintances, which remarks the need to reinforce the information given to parents so that this fact does not influence decision-making.</p>\u0000 </section>\u0000 </div>","PeriodicalId":13544,"journal":{"name":"Influenza and Other Respiratory Viruses","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/irv.13331","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141439637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Association of Symptoms and Viral Culture Positivity for SARS-CoV-2—Tennessee, April–July 2020","authors":"Jessica E. Biddle,&nbsp;Gaston Bonenfant,&nbsp;Carlos G. Grijalva,&nbsp;Yuwei Zhu,&nbsp;Natasha B. Halasa,&nbsp;James D. Chappell,&nbsp;Alexandra Mellis,&nbsp;Carrie Reed,&nbsp;H. Keipp Talbot,&nbsp;Bin Zhou,&nbsp;Melissa A. Rolfes","doi":"10.1111/irv.13318","DOIUrl":"https://doi.org/10.1111/irv.13318","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Understanding how symptoms are associated with SARS-CoV-2 culture positivity is important for isolation and transmission control guidelines.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Individuals acutely infected with SARS-CoV-2 in Tennessee and their household contacts were recruited into a prospective study. All participants self-collected nasal swabs daily for 14 days and completed symptom diaries from the day of illness onset through day 14 postenrollment. Nasal specimens were tested for SARS-CoV-2 using RT-qPCR. Positive specimens with cycle threshold values &lt; 40 were sent to the Centers for Disease Control and Prevention (CDC) for viral culture. First, we modeled the association between symptoms and the risk of culture positivity using an age-adjusted generalized additive model (GAM) accounting for repeated measurements within participants and a symptom-day spline. Next, we investigated how timing of symptom resolution was associated with the timing of culture resolution.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>In a GAM restricted to follow-up days after symptoms began, the odds of a specimen being culture positive was significantly increased on days when wheezing, loss of taste or smell, runny nose, nasal congestion, sore throat, fever, or any symptom were reported. For all symptoms except sore throat, it was more common for participants to have culture resolution before symptom resolution than for culture to resolve after or on the same day as symptom resolution.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Overall, symptomatic individuals were more likely to be SARS-CoV-2 viral culture positive. For most symptoms, culture positivity was more likely to end before symptoms resolved. However, a proportion of individuals remained culture positive after symptom resolved, across all symptoms.</p>\u0000 </section>\u0000 </div>","PeriodicalId":13544,"journal":{"name":"Influenza and Other Respiratory Viruses","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/irv.13318","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141439616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Identification of Various Recombinants in a Patient Coinfected With the Different SARS-CoV-2 Variants","authors":"Yusuke Sayama,&nbsp;Akie Sakagami,&nbsp;Michiko Okamoto,&nbsp;Masahiro Sakamoto,&nbsp;Hikari Koizumi,&nbsp;Yoko Kimura,&nbsp;Clyde Dapat,&nbsp;Mayuko Saito,&nbsp;Yuko Suzuki,&nbsp;Mie Sasaki,&nbsp;Naoko Sugawara,&nbsp;Hitoshi Oshitani","doi":"10.1111/irv.13340","DOIUrl":"10.1111/irv.13340","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Viral recombination that occurs by exchanging genetic materials between two viral genomes coinfecting the same host cells is associated with the emergence of new viruses with different virulence. Herein, we detected a patient coinfected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Delta and Omicron variants and identified various recombinants in the SARS-CoV-2 full-length spike gene using long-read and Sanger sequencing.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Samples from five patients in Japan with household transmission of coronavirus disease 2019 (COVID-19) were analyzed using molecular assays for detection and identification of SARS-CoV-2. Whole-genome sequencing was conducted using multiplex PCR with short-read sequencing.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Among the five SARS-CoV-2-positive patients, the mutation-specific assay identified the Delta variant in three, the Omicron variant in one, and an undetermined in one. The undermined patient was identified as Delta using whole-genome sequencing, but samples showed a mixed population of Delta and Omicron variants. This patient was analyzed for viral quasispecies by long-read and Sanger sequencing using a full-length spike gene amplicon. In addition to the Delta and Omicron sequences, the viral quasispecies analysis identified nine different genetic recombinant sequences with various breakpoints between Delta and Omicron sequences. The nine detected recombinant sequences in the spike gene showed over 99% identity with viruses that were detected during the Delta and Omicron cocirculation period from the United States and Europe.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>This study demonstrates that patients coinfected with different SARS-CoV-2 variants can generate various viral recombinants and that various recombinant viruses may be produced during the cocirculation of different variants.</p>\u0000 </section>\u0000 </div>","PeriodicalId":13544,"journal":{"name":"Influenza and Other Respiratory Viruses","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/irv.13340","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141418784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of SARS-CoV-2 Pandemic on Emergency Hospitalizations for Acute Respiratory Infections: The Experience of a Paediatric Tertiary Care Hospital in Italy","authors":"Marta Luisa Ciofi degli Atti,&nbsp;Flavia Beccia,&nbsp;Carmen D'Amore,&nbsp;Lucilla Ravà,&nbsp;Paola Bernaschi,&nbsp;Cristina Russo,&nbsp;Alberto Villani,&nbsp;Carlo Federico Perno,&nbsp;Massimiliano Raponi","doi":"10.1111/irv.13335","DOIUrl":"10.1111/irv.13335","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Acute respiratory infections (ARIs) are a major healthcare issue in children. The SARS-CoV-2 pandemic changed the epidemiology of ARIs; the aims of this study are to characterize the epidemiological trend of ARI emergency hospitalizations and virology results and to estimate the association of ARI emergency hospitalizations with respiratory viruses from January 2018 to June 2023.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>This study was carried out in an Italian tertiary care children's hospital (Bambino Gesù Children's Hospital). The demographic and clinical information of children who accessed the Emergency Department (ED) with ARI and were hospitalized were retrospectively extracted from the electronic health records. Multivariate linear regression model was used to compare the number of ARI hospital admissions with the reported temporal trends in viruses diagnosed from respiratory samples throughout the same time period.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>During the study period, there were 92,140 ED visits and 10,541 hospitalizations due to ARIs, reflecting an admission rate of 11.4%. The highest proportion of hospitalizations occurred in infants ≤ 1 year of age (<i>n</i> = 4840, 45.9% of total admissions), with a hospitalization rate of 22.6%. Emergency hospitalizations aligned closely with the predictions made by the multivariate regression model; peaks in hospitalizations reflected Respiratory Syncytial Virus (RSV) circulation.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>ARI hospital urgent admissions are a relevant component of ARI disease burden in children. RSV prevention and control are crucial to limit the risk of urgent hospitalizations due to ARIs.</p>\u0000 </section>\u0000 </div>","PeriodicalId":13544,"journal":{"name":"Influenza and Other Respiratory Viruses","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/irv.13335","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141418785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficacy and Safety of Ensitrelvir for Asymptomatic or Mild COVID-19: An Exploratory Analysis of a Multicenter, Randomized, Phase 2b/3 Clinical Trial","authors":"Norio Ohmagari,&nbsp;Hiroshi Yotsuyanagi,&nbsp;Yohei Doi,&nbsp;Masaya Yamato,&nbsp;Takumi Imamura,&nbsp;Hiroki Sakaguchi,&nbsp;Hideki Yamanaka,&nbsp;Ryosuke Imaoka,&nbsp;Akimasa Fukushi,&nbsp;Genki Ichihashi,&nbsp;Takao Sanaki,&nbsp;Yuko Tsuge,&nbsp;Takeki Uehara,&nbsp;Hiroshi Mukae","doi":"10.1111/irv.13338","DOIUrl":"10.1111/irv.13338","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>This phase 2b/3, randomized, placebo-controlled trial explored the efficacy and evaluated the safety of ensitrelvir. This trial involved individuals with asymptomatic infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and patients with mild symptoms of coronavirus disease 2019 (COVID-19).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>The trial was conducted at 57 medical institutions in Japan, South Korea, and Vietnam (study period: January 6–August 14, 2022). Eligible participants were randomized (1:1:1) to the ensitrelvir 125-mg, ensitrelvir 250-mg, or placebo group, received the allocated intervention orally, and were followed up until Day 28. Participants self-rated the severity of 14 typical COVID-19 symptoms and recorded the data in an electronic diary.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>In total, 572 participants (194, 189, and 189 in the ensitrelvir 125-mg, ensitrelvir 250-mg, and placebo groups, respectively) were included in the intention-to-treat population. Ensitrelvir 125-mg group observed a 77% reduction in the risk of developing any of the 14 COVID-19 symptoms or fever and a 29% reduction in the risk of worsening of such symptoms or fever versus placebo (statistically nonsignificant). The viral RNA, viral titer, and time to infectious viral clearance observed a statistically significant decrease versus placebo. Most treatment-related adverse events (TEAEs) were mild to moderate in severity, and the most common TEAE observed across groups was a decrease in high-density lipoprotein.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Our exploratory results suggest a potential reduction in the risk of development or worsening of COVID-19 symptoms with ensitrelvir. Ensitrelvir showed antiviral efficacy and was well tolerated.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <p><b>Trial Registration:</b> Japan Registry of Clinical Trials identifier: jRCT2031210350.</p>\u0000 </section>\u0000 </div>","PeriodicalId":13544,"journal":{"name":"Influenza and Other Respiratory Viruses","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/irv.13338","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141418783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Randomized, Double-Blind, Placebo-Controlled, Phase 1 Study to Evaluate the Safety, Reactogenicity, and Immunogenicity of Single Vaccination of Ad26.RSV.preF-Based Regimen in Japanese Adults Aged 60 Years and Older","authors":"Takashi Eto,&nbsp;Yusuke Okubo,&nbsp;Atsushi Momose,&nbsp;Hiroshi Tamura,&nbsp;Richuan Zheng,&nbsp;Benoit Callendret,&nbsp;Arangassery Rosemary Bastian,&nbsp;Christy A. Comeaux","doi":"10.1111/irv.13336","DOIUrl":"10.1111/irv.13336","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Respiratory syncytial virus (RSV) is increasingly recognized as a significant cause of lower respiratory tract disease (LRTD) in older adults. The Ad26.RSV.preF/RSV preF protein vaccine demonstrated protective efficacy against RSV related LRTD in a Phase 2b study in the United States. Hence, Ad26.RSV.preF/RSV preF protein vaccine candidate was evaluated in the Japanese older adult population.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>This Phase 1 study evaluated safety, reactogenicity, and immunogenicity of Ad26.RSV.preF/RSV preF protein vaccine at dose level of 1 × 10¹¹ vp/150 μg in Japanese healthy adult aged ≥60 years. The study included a screening Phase, vaccination, 28-day follow up Phase, a 182-day follow-up period, and final visit on Day 183. A total of 36 participants were randomized in a 2:1 ratio to receive Ad26.RSV.preF/RSV preF protein vaccine (<i>n</i> = 24) or placebo (<i>n</i> = 12). After study intervention administration, the safety and immunogenicity analysis were performed as per planned schedule. Immune responses including virus-neutralizing and preF-specific binding antibodies were measured on Days 1, 15, 29, and 183.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>There were no deaths, SAEs, or AEs leading to discontinuation reported during the study. The Ad26.RSV.preF/RSV preF protein vaccine had acceptable safety and tolerability profile with no safety concern in Japanese older adults. The Ad26.RSV.preF/RSV preF protein vaccine induced RSV-specific humoral immunity, with increase in antibody titers on Days 15 and 29 compared with baseline which was well maintained until Day 183.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>A single dose of Ad26.RSV.preF/RSV preF protein vaccine had an acceptable safety and tolerability profile and induced RSV-specific humoral immunity in Japanese healthy adults.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Trial Registration</h3>\u0000 \u0000 <p>NCT number: NCT04354480; Clinical Registry number: CR108768.</p>\u0000 </section>\u0000 </div>","PeriodicalId":13544,"journal":{"name":"Influenza and Other Respiratory Viruses","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11180550/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141330865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}