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Boattini M, Almeida A, Comini S, Bianco G, Cavallo R, Costa C. From Forgotten Pathogen to Target for New Vaccines: What Clinicians Need to Know about Respiratory Syncytial Virus Infection in Older Adults. Viruses 2024; 16:531. [PMID: 38675874 PMCID: PMC11053843 DOI: 10.3390/v16040531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 03/24/2024] [Accepted: 03/26/2024] [Indexed: 04/28/2024] Open
Abstract
Respiratory syncytial virus (RSV) is increasingly recognized as being implicated in acute illness in older adults, with a significant weight in hospitalizations for respiratory illness and death. By means of a best-evidence review, this paper aims to investigate whether RSV can be considered a forgotten pathogen in older patients, looking at trends in the literature volume and exploring possible epidemiological and clinical features underlying the focus given to it. We then present an assessment of its disease burden and present and future strategies for its reduction, particularly in light of the recent availability of new vaccines.
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Affiliation(s)
- Matteo Boattini
- Microbiology and Virology Unit, University Hospital Città della Salute e della Scienza di Torino, 10126 Turin, Italy; (G.B.)
- Department of Public Health and Paediatrics, University of Torino, 10126 Turin, Italy
- Lisbon Academic Medical Centre, 1649-028 Lisbon, Portugal
| | - André Almeida
- Department of Internal Medicine 4, Centro Hospitalar Universitário de Lisboa Central, Centro Clínico Académico de Lisboa, 1169-024 Lisbon, Portugal;
- NOVA Medical School, Universidade Nova de Lisboa, Centro Clínico Académico de Lisboa, 1169-056 Lisbon, Portugal
| | - Sara Comini
- Operative Unit of Clinical Pathology, Carlo Urbani Hospital, 60035 Jesi, Italy
| | - Gabriele Bianco
- Microbiology and Virology Unit, University Hospital Città della Salute e della Scienza di Torino, 10126 Turin, Italy; (G.B.)
- Department of Public Health and Paediatrics, University of Torino, 10126 Turin, Italy
- Department of Experimental Medicine, University of Salento, Via Provinciale Monteroni n. 165, 73100 Lecce, Italy
| | - Rossana Cavallo
- Microbiology and Virology Unit, University Hospital Città della Salute e della Scienza di Torino, 10126 Turin, Italy; (G.B.)
- Department of Public Health and Paediatrics, University of Torino, 10126 Turin, Italy
| | - Cristina Costa
- Microbiology and Virology Unit, University Hospital Città della Salute e della Scienza di Torino, 10126 Turin, Italy; (G.B.)
- Department of Public Health and Paediatrics, University of Torino, 10126 Turin, Italy
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Osei-Yeboah R, Johannesen CK, Egeskov-Cavling AM, Chen J, Lehtonen T, Fornes AU, Paget J, Fischer TK, Wang X, Nair H, Campbell H. Respiratory Syncytial Virus-Associated Hospitalization in Adults With Comorbidities in 2 European Countries: A Modeling Study. J Infect Dis 2024; 229:S70-S77. [PMID: 37970679 DOI: 10.1093/infdis/jiad510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 11/07/2023] [Accepted: 11/11/2023] [Indexed: 11/17/2023] Open
Abstract
BACKGROUND Individuals with comorbidities are at increased risk of severe respiratory syncytial virus (RSV) infection. We estimated RSV-associated respiratory hospitalization among adults aged ≥45 years with comorbidities in Denmark and Scotland. METHODS By analyzing national hospital and virologic data, we estimated annual RSV-associated hospitalizations by 7 selected comorbidities and ages between 2010 and 2018. We estimated rate ratios of RSV-associated hospitalization for adults with comorbidity than the overall population. RESULTS In Denmark, annual RSV-associated hospitalization rates per 1000 adults ranged from 3.1 for asthma to 19.4 for chronic kidney disease (CKD). In Scotland, rates ranged from 2.4 for chronic liver disease to 9.0 for chronic obstructive pulmonary disease (COPD). In both countries, we found a 2- to 4-fold increased risk of RSV hospitalization for adults with COPD, ischemic heart disease, stroke, and diabetes; a 1.5- to 3-fold increased risk for asthma; and a 3- to 7-fold increased risk for CKD. RSV hospitalization rates among adults aged 45 to 64 years with COPD, asthma, ischemic heart disease, or CKD were higher than the overall population. CONCLUSIONS This study provides important evidence for identifying risk groups and assisting health authorities in RSV vaccination policy making.
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Affiliation(s)
- Richard Osei-Yeboah
- Centre for Global Health, Usher Institute, University of Edinburgh, United Kingdom
| | - Caroline Klint Johannesen
- Department of Virology and Microbiological Special Diagnostics, Statens Serum Institut, Copenhagen, Denmark
| | - Amanda Marie Egeskov-Cavling
- Department of Clinical Research, Nordsjaellands Hospital Hilleroed, and Department of Public Health, University of Copenhagen, Denmark
| | - Junru Chen
- School of Public Health, Nanjing Medical University, China
| | - Toni Lehtonen
- Department of Health Security, Finnish Institute for Health and Welfare, Helsinki
| | - Arantxa Urchueguía Fornes
- Vaccine Research Department, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region, Valencia, Spain
| | - John Paget
- Department of Primary Care, Netherlands Institute for Health Services Research, Utrecht
| | - Thea K Fischer
- Department of Virology and Microbiological Special Diagnostics, Statens Serum Institut, Copenhagen, Denmark
| | - Xin Wang
- Centre for Global Health, Usher Institute, University of Edinburgh, United Kingdom
- School of Public Health, Nanjing Medical University, China
| | - Harish Nair
- Centre for Global Health, Usher Institute, University of Edinburgh, United Kingdom
| | - Harry Campbell
- Centre for Global Health, Usher Institute, University of Edinburgh, United Kingdom
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Njue A, Nuabor W, Lyall M, Margulis A, Mauskopf J, Curcio D, Kurosky S, Gessner BD, Begier E. Systematic Literature Review of Risk Factors for Poor Outcomes Among Adults With Respiratory Syncytial Virus Infection in High-Income Countries. Open Forum Infect Dis 2023; 10:ofad513. [PMID: 38033988 PMCID: PMC10686344 DOI: 10.1093/ofid/ofad513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 10/18/2023] [Indexed: 12/02/2023] Open
Abstract
Identification of risk factors for severe respiratory syncytial virus (RSV) disease in adults could facilitate their appropriate vaccine recommendations. We conducted a systematic literature review (last 10 years in PubMed/Embase) to identify quantitative estimates of risk factors for severe RSV infection outcomes in high-income countries. Severe outcomes from RSV infection included hospitalization, excess mortality, lower respiratory tract infection, or a composite measure: severe RSV, which included these outcomes and others, such as mechanical ventilation and extended hospital stay. Among 1494 articles screened, 26 met eligibility criteria. We found strong evidence that the following increased the risk of severe outcomes: age, preexisting comorbid conditions (eg, cardiac, pulmonary, and immunocompromising diseases, as well as diabetes and kidney disease), and living conditions (socioeconomic status and nursing home residence). The frequency of severe outcomes among younger adults with comorbidities was generally similar to that experienced by older adults, suggesting that immunosenescence and chronic conditions are both contributing factors for elevated risk. Trial registration PROSPERO (CRD42022315239).
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Affiliation(s)
- Annete Njue
- Department of Market Access and Outcomes Strategy, RTI Health Solutions, Manchester, UK
| | - Weyinmi Nuabor
- Department of Market Access and Outcomes Strategy, RTI Health Solutions, Manchester, UK
| | - Matthew Lyall
- Department of Market Access and Outcomes Strategy, RTI Health Solutions, Manchester, UK
| | - Andrea Margulis
- Department of Pharmacoepidemiology and Risk Management, RTI Health Solutions, Barcelona, Spain
| | - Josephine Mauskopf
- Department of Health Economics, RTI Health Solutions, Research Triangle Park, North Carolina, USA
| | - Daniel Curcio
- Global Medical Development & Scientific Affairs, Pfizer Vaccines, Pfizer Inc, Collegeville, Pennsylvania, USA
| | - Samantha Kurosky
- Global Medical Development & Scientific Affairs, Pfizer Vaccines, Pfizer Inc, Collegeville, Pennsylvania, USA
| | - Bradford D Gessner
- Global Medical Development & Scientific Affairs, Pfizer Vaccines, Pfizer Inc, Collegeville, Pennsylvania, USA
| | - Elizabeth Begier
- Global Medical Development & Scientific Affairs, Pfizer Vaccines, Pfizer Inc, Collegeville, Pennsylvania, USA
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Grace M, Colosia A, Wolowacz S, Panozzo C, Ghaswalla P. Economic burden of respiratory syncytial virus infection in adults: a systematic literature review. J Med Econ 2023:1-60. [PMID: 37167068 DOI: 10.1080/13696998.2023.2213125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
AIMS Capture the economic and healthcare resource utilization (HCRU) burden in older adults due to respiratory syncytial virus (RSV) infection. METHODS An electronic literature search of PubMed, Embase, the Cochrane Library, PsycINFO, and EconLit was conducted for studies of the cost and HCRU outcomes of RSV infection in adult patients, with no language or country restrictions. Search dates for primary studies were January 1, 2002-May 18, 2022. The methodological quality of included studies was assessed using a modification of the Critical Appraisal Skills Programme (CASP) checklist for economic studies and the Drummond checklist. RESULTS 42 studies were identified that reported cost or HCRU data associated with RSV infections, with geographic locations across North America, South America, Europe, Asia, and Oceania. Generally, hospitalization costs were highest in the United States (US). Driving factors of increased cost included older age, comorbidities, and length of stay. US studies found that the national direct cost burden of RSV hospitalizations was $1.3 billion for all adults and $1.5-$4.0 billion for adults aged ≥60 years (estimates for other countries were not identified). Studies estimating incremental costs for RSV cases versus controls and costs pre- and post-RSV infection demonstrated higher costs for RSV cases. Hospitalizations accounted for the majority of total costs.
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Affiliation(s)
- Mei Grace
- RTI Health Solutions, Research Triangle Park, NC, USA
| | - Ann Colosia
- RTI Health Solutions, Research Triangle Park, NC, USA
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Li Y, Kulkarni D, Begier E, Wahi-Singh P, Wahi-Singh B, Gessner B, Nair H. Adjusting for Case Under-Ascertainment in Estimating RSV Hospitalisation Burden of Older Adults in High-Income Countries: a Systematic Review and Modelling Study. Infect Dis Ther 2023; 12:1137-1149. [PMID: 36941483 PMCID: PMC10027261 DOI: 10.1007/s40121-023-00792-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 03/08/2023] [Indexed: 03/23/2023] Open
Abstract
INTRODUCTION Previous studies suggest diagnostic testing characteristics (i.e. variations in clinical specimens and diagnostic tests) can contribute to underestimation of RSV disease burden. We aimed to improve the understanding of RSV hospitalisation burden in older adults (aged ≥ 65 years) in high-income countries through adjusting for case under-ascertainment. METHODS We conducted a systematic review to include data on RSV-associated acute respiratory infection (ARI) hospitalisation burden in older adults in high-income countries. To adjust for case under-ascertainment, we developed a two-step framework that incorporated empirical data on the RSV detection proportion of different clinical specimens and testing approaches as well as their statistical uncertainty. We estimated the unadjusted and adjusted RSV-associated hospitalisation burden through multilevel random-effects meta-analysis. We further explored RSV-associated in-hospital mortality burden. RESULTS We included 12 studies with eligible RSV hospitalisation burden data. We estimated that pooled unadjusted hospitalisation rate was 157 per 100,000 (95% CI 98-252) for adults aged ≥ 65 years; the rate was adjusted to 347 per 100,000 (203-595) after accounting for under-ascertainment. The adjusted rate could be translated into 787,000 (460,000-1,347,000) RSV-associated hospitalisations in high-income countries in 2019, which was about 2.2 times the unadjusted estimate. Stratified analysis by age group showed that the adjusted rate increased with age, from 231 per 100,000 in adults aged 65-74 years to 692 per 100,000 in adults aged > 85 years. The in-hospital case fatality ratio of RSV was 6.1% (3.3-11.0) and the total RSV-associated in-hospital deaths in high-income countries in 2019 could be between 22,000 and 47,000. CONCLUSION This study improves the understanding of RSV-associated hospitalisation burden in older adults and shows that the true RSV-associated hospitalisation burden could be 2.2 times what was reported in existing studies. This study has implications for calculating the benefit of interventions to treat and prevent RSV-associated disease.
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Affiliation(s)
- You Li
- School of Public Health, Nanjing Medical University, 101 Longmian Avenue, Nanjing, 211166, China.
- Centre for Global Health, Usher Institute, University of Edinburgh, Edinburgh, UK.
| | - Durga Kulkarni
- Centre for Global Health, Usher Institute, University of Edinburgh, Edinburgh, UK
| | - Elizabeth Begier
- Global Medical Development Scientific and Clinical Affairs, Pfizer Vaccines, Dublin, Ireland
| | - Pia Wahi-Singh
- Centre for Global Health, Usher Institute, University of Edinburgh, Edinburgh, UK
| | - Bhanu Wahi-Singh
- Centre for Global Health, Usher Institute, University of Edinburgh, Edinburgh, UK
| | | | - Harish Nair
- Centre for Global Health, Usher Institute, University of Edinburgh, Edinburgh, UK
- MRC/Wits Rural Public Health and Health Transitions Research Unit (Agincourt), School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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Bruce MG, Bressler SS, Apostolou A, Singleton RJ. Lower respiratory tract infection hospitalizations among American Indian/Alaska Native adults, Indian Health Service and Alaska Region, 1998-2014. Int J Infect Dis 2021; 111:130-137. [PMID: 34419583 DOI: 10.1016/j.ijid.2021.08.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 08/15/2021] [Accepted: 08/17/2021] [Indexed: 10/20/2022] Open
Abstract
OBJECTIVES This study describes the changes in lower respiratory tract infection (LRTI) rates from 1998 to 2014 among hospitalized American Indian/Alaska Native (AI/AN) adults residing in Alaska and other Indian Health Service (IHS) regions. METHODS Age-adjusted hospital discharge rates and rate ratios were calculated from the IHS Direct and Contract Health Services Inpatient Dataset, IHS National Patient Information Reporting System for AI/AN adults ≥18 years, hospitalized at an IHS-operated, tribally operated, or contract hospital with an LRTI-associated diagnosis during 1998-2014. RESULTS Overall, there were 13 733 LRTI-associated hospitalizations in Alaska (1998-2014), with an age-adjusted rate of 13.7/1000 adults. Among non-Alaska (non-AK) AI/AN, there were a total of 79 170 hospitalizations, with a rate of 8.6/1000 adults. In the pre-PCV7 and pre-PCV13 periods, LRTI rates were higher in Alaska (AK) AI/AN (12.4 and 14.1, respectively) when compared to non-AK AI/AN (10.1 and 9.1, respectively) (P < 0.0001). In the post-PCV7 and post-PCV13 periods, LRTI rates were also higher in AK (13.5 and 15.0, respectively) compared to non-AK (9.2 and 7.3, respectively) (P < 0.0001). CONCLUSIONS Over the study period, a 26% increase in rates of LRTI among adult AI/AN residing in AK compared with a 38% decrease in rates among AI/AN residing in non-AK were observed. This disparity is likely due to a variety of factors such as tobacco use, crowding, etc. Strategies to reduce LRTI in AI/AN adults are needed.
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Affiliation(s)
- Michael G Bruce
- Arctic Investigations Program, National Center for Emerging Zoonotic and Infectious Diseases, Centers for Disease Control and Prevention, Anchorage, Alaska, USA.
| | - Sara S Bressler
- Arctic Investigations Program, National Center for Emerging Zoonotic and Infectious Diseases, Centers for Disease Control and Prevention, Anchorage, Alaska, USA
| | - Andria Apostolou
- Division of Epidemiology and Disease Prevention, Office of Public Health Support, Indian Health Service, Rockville, Maryland, USA
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