scholarly journals 746. Characteristics of Respiratory Syncytial Virus (RSV) Infection Among Hospitalized Adults, United States, 2014–2017

2018 ◽  
Vol 5 (suppl_1) ◽  
pp. S268-S268 ◽  
Author(s):  
Lindsay Kim ◽  
Bryanna Cikesh ◽  
Pam Daily Kirley ◽  
Evan J Anderson ◽  
Seth Eckel ◽  
...  
Keyword(s):  
Risk Factors ◽  
Respiratory Syncytial Virus ◽  
Case Series ◽  
Chronic Obstructive ◽  
Medical Conditions ◽  
Research Support ◽  
Catchment Population ◽  
Icd Codes ◽  
Syncytial Virus ◽  
Research Grant

Abstract Background Respiratory syncytial virus (RSV) vaccines are in clinical development for older adults. We described RSV infections among adults requiring hospitalization and risk factors for severe outcomes using a population-based platform, the Influenza Hospitalization Surveillance Network (FluSurv-NET). Methods Surveillance occurred October 1–April 30 (2014–2017) at sites located in seven states (California, Georgia, Michigan, Minnesota, New York, Oregon, and Tennessee) covering an annual catchment population of up to 13 million adults ≥18 years. Laboratory-confirmed RSV cases were identified using hospital and state public health laboratories, hospital infection preventionists, and/or reportable condition databases. Medical charts were reviewed for demographic and clinical data. International Classification of Diseases (ICD) discharge codes were abstracted. Odds ratios (Oregon) and 95% confidence intervals (CIs) were determined to assess risk factors for ICU hospitalization and deaths. Results A total of 2,326 hospitalized RSV cases were identified. Over half were ≥65 years (62%, n = 1,438/2,326), female (59%, n = 1,362/2,326), white (70%, n = 1,301/1,855), and had ≥3 underlying medical conditions (52%, n = 1,204/2,326). 20% (n = 398/2,000) were hospitalized in the ICU (median length of stay, 3 days; interquartile range, 1–6 days), and 5% (n = 96/2,001) died in the hospital. Congestive heart failure (CHF; OR: 1.4, 95% CI: 1.1–1.8) and chronic obstructive pulmonary disease (COPD; OR: 1.3, 95% CI: 1.1–1.7) were associated with ICU admission, while age ≥80 years (OR: 4.1, 95% CI: 1.8–12.1) and CHF (OR: 2.4, 95% CI: 1.6–3.6) were associated with in-hospital deaths. RSV-specific ICD codes were listed in the first 9 positions in only 44% (879/1,987) of cases. Conclusion To our knowledge, this is the largest US case series of RSV-infected hospitalized adults. Most cases were ≥65 years and had multiple underlying medical conditions. Older age, CHF, and COPD were associated with the most severe outcomes. Few cases had RSV-specific ICD codes, suggesting that administrative data underestimate adult RSV-related hospitalizations. Continued surveillance is needed to understand the epidemiology of RSV among adults as vaccine products move toward licensure. Disclosures E. J. Anderson, NovaVax: Grant Investigator, Research grant. Pfizer: Grant Investigator, Research grant. AbbVie: Consultant, Consulting fee. MedImmune: Investigator, Research support. PaxVax: Investigator, Research support. Micron: Investigator, Research support. H. K. Talbot, sanofi pasteur: Investigator, Research grant. Gilead: Investigator, Research grant. MedImmune: Investigator, Research grant. Vaxinnate: Safety Board, none. Seqirus: Safety Board, none.

Respiratory Syncytial Virus–Associated Hospitalizations Among Adults With Chronic Medical Conditions

2020 ◽  
Author(s):  
Namrata Prasad ◽  
Tiffany A Walker ◽  
Ben Waite ◽  
Tim Wood ◽  
Adrian A Trenholme ◽  
...  
Keyword(s):  
Respiratory Syncytial Virus ◽  
Length Of Hospital Stay ◽  
Respiratory Illness ◽  
Chronic Obstructive ◽  
Chronic Medical Conditions ◽  
Age Group ◽  
Medical Conditions ◽  
Hospitalization Rates ◽  
Increased Risk ◽  
Syncytial Virus

Abstract Background In contrast with respiratory disease caused by influenza, information on the risk of respiratory syncytial virus (RSV) disease among adults with chronic medical conditions (CMCs) is limited. Methods We linked population-based surveillance of acute respiratory illness hospitalizations to national administrative data to estimate seasonal RSV hospitalization rates among adults aged 18–80 years with the following preexisting CMCs: chronic obstructive pulmonary disease (COPD), asthma, congestive heart failure (CHF), coronary artery disease (CAD), cerebrovascular accidents (CVA), diabetes mellitus (DM), and end-stage renal disease (ESRD). Age- and ethnicity-adjusted rates stratified by age group were estimated. Results Among 883 999 adult residents aged 18–80 years, 281 RSV-positive hospitalizations were detected during 2012–2015 winter seasons. Across all ages, RSV hospitalization rates were significantly higher among adults with COPD, asthma, CHF, and CAD compared with those without each corresponding condition. RSV hospitalization rates were significantly higher among adults with ESRD aged 50–64 years and adults with DM aged 18–49 years and 65–80 years compared with adults in each age group without these conditions. No increased risk was seen for adults with CVA. The CMC with the highest risk of RSV hospitalization was CHF (incidence rate ratio [IRR] range, 4.6–36.5 across age strata) and COPD (IRR range, 9.6–9.7). Among RSV-positive adults, CHF and COPD were independently associated with increased length of hospital stay. Conclusions Adults with specific CMCs are at increased risk of RSV hospitalizations. Age affects this relationship for some CMCs. Such populations maybe relevant for future RSV prevention strategies.

scholarly journals 2314. Burden of Respiratory Syncytial Virus (RSV) Infection Among Hospitalized Older Adults and Those with Underlying Chronic Obstructive Pulmonary Disease (COPD) or Congestive Heart Failure (CHF)

2019 ◽  
Vol 6 (Supplement_2) ◽  
pp. S793-S794
Author(s):  
Evan J Anderson ◽  
Laila Hussaini ◽  
Laurel Bristow ◽  
Ashley Tippett ◽  
Theda Gibson ◽  
...  
Keyword(s):  
Older Adults ◽  
Respiratory Syncytial Virus ◽  
Respiratory Infections ◽  
Standard Of Care ◽  
Chronic Obstructive ◽  
Healthy Controls ◽  
Convenience Sample ◽  
Obstructive Pulmonary Disease ◽  
Syncytial Virus ◽  
Research Grant

Abstract Background Data are limited about the burden of respiratory syncytial virus (RSV)-related hospitalizations in older adults and those with COPD or CHF. Methods We conducted prospective surveillance at two hospitals from October 2018 to March 2019 for adults ≥50 years of age admitted with acute respiratory infections (ARI) and adults of any age with COPD or CHF-related admissions. Adults were eligible if they were residents of an 8 county region in Atlanta, Georgia. Asymptomatic adults ≥50 years of age were enrolled as controls. Nasopharyngeal and oropharyngeal swabs were tested for RSV and influenza (Flu) using BioFire® FilmArray® Respiratory Viral Panel (RVP) and acute/convalescent serology was obtained for RSV antibodies detection by enzyme immunoassay against RSV lysate. Standard of care results were included for enrollees. We compare the number of RSV+, Flu+ and RSV−/Flu− cases along with demographic features and outcomes. Results We screened 12,453 patients to identify 1,515 eligible adults of which 617 (41%) were enrolled. The most common reasons for failing to enroll were refusal (676, 75%) and inability to obtain informed consent (221, 25%). Of the 617, 36 (6%) were RSV+ and 41 (7%) were Flu+. RSV was detected in 1/126 (0.8%) and Flu in 0/126 healthy controls. RSV+ occurred earlier in surveillance and peaked at a higher frequency (figure). Clinical characteristics and outcomes are in the table. In a convenience sample, a four-fold rise in RSV antibody titer was detected among 8/15 RSV+, 0/42 RSV−/Flu−, and 0/42 healthy controls. Conclusion The burden and outcomes for RSV are similar to Flu in adults admitted to the hospital with ARI, CHF, or COPD. A vaccine for RSV would be beneficial. Disclosures Nadine Rouphael, MD, Merck: I conduct as Emory PI the PNEUMO MERCK study at Emory, Research Grant; Pfizer: I conduct as co-PI the RSV PFIZER study at Emory, Research Grant; Sanofi-Pasteur: I conducted as Emory PI the CDIFFENSE trial at Emory, Research Grant.

scholarly journals 735. Severity and Healthcare Costs of Respiratory Syncytial Virus Hospitalizations in US Preterm Infants Born at 29–34 Weeks Gestation: 2014–2016

2018 ◽  
Vol 5 (suppl_1) ◽  
pp. S264-S264
Author(s):  
Mitchell Goldstein ◽  
Leonard R Krilov ◽  
Jaime Fergie ◽  
Christopher S Ambrose ◽  
Sally Wade ◽  
...  
Keyword(s):  
Respiratory Syncytial Virus ◽  
Healthcare Costs ◽  
Economic Value ◽  
Research Support ◽  
Term Infants ◽  
Diagnosis Codes ◽  
Chi Squared ◽  
Syncytial Virus ◽  
Age Category ◽  
Research Grant

Abstract Background In 2014, the American Academy of Pediatrics recommended against the use of respiratory syncytial virus (RSV) immunoprophylaxis in infants 29–34 weeks gestational age (wGA) at birth without chronic lung disease/bronchopulmonary dysplasia (CLD/BPD) or congenital heart disease (CHD). To inform discussions of the clinical and economic value of RSV immunoprophylaxis in these infants, we compared RSV hospitalization (RSVH) severity and costs incurred by infants hospitalized from 2014–2016 at <6 months chronologic age (CA) for two groups: 29–34 wGA infants without CLD/BPD or CHD and term infants (≥37 wGA) without major health problems. Methods Births were identified in the MarketScan Commercial (COM) and Multistate Medicaid (MED) databases. Term and 29–34 wGA infants without CLD/BPD or CHD were selected using DRG and ICD-9/10-CM diagnosis codes. RSVH occurring from Julu 1, 2014 to June 30, 2016 while infants were <6 months CA (the period of highest RSVH incidence) were identified by ICD-9/10-CM diagnosis codes. Severity measures were length of stay (LOS) in days, intensive care unit (ICU) admissions, and healthcare costs (paid amounts on reimbursed hospital claims in 2016 US$). Comparisons between term and 29–34 wGA infants were made with t-tests and chi-squared tests. Results There were 1,114 RSVH in the COM data and 3,167 RSVH in the MED data during the study period. Mean LOS was longer for 29–34 wGA infants than term infants for each age category (P < 0.05) and tended to be longer for MED infants vs. COM infants (Figure 1). Thirty-eight percent of COM 29–34 wGA infants and 52% of MED 29–34 wGA infants hospitalized for RSV at <3 months CA were admitted to the ICU (Figure 2). RSVH costs for 29–34 wGA infants were greater than term RSVH costs for each age category (P < 0.05) and were greatest among 29–34 wGA infants hospitalized at <3 months CA: $41,104 for 29–34 wGA COM infants and $24,049 for 29–34 wGA MED infants (Figure 3). Conclusion RSVH severity and costs were significantly higher for 29–34 wGA infants without CLD/BPD or CHD relative to term infants. Infants hospitalized at <3 months CA experienced the most severe hospitalizations and incurred the highest costs. This study was funded by AstraZeneca. Disclosures M. Goldstein, AstraZeneca/MedImmune: Consultant, Research grant and Research support. L. R. Krilov, AstraZeneca/MedImmune: Consultant, Research grant and Research support. J. Fergie, AstraZeneca/MedImmune: Consultant and Speaker’s Bureau, Research grant and Research support. C. S. Ambrose, AstraZeneca: Employee, Salary and Stocks. S. Wade, Wade Outcomes Research and Consulting: Employee, Salary. A. Kong, Truven Health Analytics, an IBM Company: Employee, Salary. L. Brannman, AstraZeneca: Employee, Salary and Stocks.

scholarly journals 743. Severity and Costs of Respiratory Syncytial Virus and Bronchiolitis Hospitalization in Commercially Insured Preterm and Term Infants Before and After the 2014 American Academy of Pediatrics Guidance Change on Immunoprophylaxis

2018 ◽  
Vol 5 (suppl_1) ◽  
pp. S267-S267
Author(s):  
Leonard R Krilov ◽  
Jaime Fergie ◽  
Mitchell Goldstein ◽  
Christopher Rizzo ◽  
Lance Brannman ◽  
...  
Keyword(s):  
Respiratory Syncytial Virus ◽  
American Academy ◽  
Health Problems ◽  
Research Database ◽  
Research Support ◽  
Term Infants ◽  
American Academy Of Pediatrics ◽  
Hospitalization Costs ◽  
Syncytial Virus ◽  
Research Grant

Abstract Background In 2014, the American Academy of Pediatrics (AAP) stopped recommending respiratory syncytial virus (RSV) immunoprophylaxis in infants 29–34 weeks gestational age (wGA) without chronic lung disease (CLD) or congenital heart disease (CHD). This study examined the impact of this guidance change on the severity and costs of first year of life RSV hospitalizations (RSVH) and all-cause bronchiolitis hospitalizations (BH) among preterm (PT) vs. term infants in the 2014–2016 seasonal years relative to the 2011–2014 seasonal years. Methods Infants aged <1 year between July 1, 2011 and June 31, 2016 were identified from commercial insurance claims in the Optum Research Database. Diagnosis codes identified births of term and 29–34 wGA infants without CLD, CHD, or other health problems, RSVH, and BH. Length of stay (LOS), admission to the intensive care unit (ICU), and use of mechanical ventilation (MV) captured RSVH and BH severity. Costs were adjusted to 2015 USD. Results A total of 362,382 births (29–34 wGA and term without major health problems) were identified, of which 13,666 (3.8%) were PT. RSVH and BH were more severe among PT infants in 2014–2016 vs. 2011–2014, with a greater mean LOS (RSVH: 6.8 vs. 4.7 days, P = 0.008; BH: 7.2 vs. 4.6, P = 0.021), a higher proportion of infants admitted to the ICU (RSVH: 42.4% vs. 25.3%, P = 0.014; BH: 39.1% vs. 23.7%, P = 0.009), and increased use of MV (RSVH: 14.1% vs. 6.1%, P = 0.067; BH: 14.8% vs. 5.3%, P = 0.013). Among term infants, LOS and ICU admissions were similar between 2014–2016 and 2011–2014 (P > 0.05), but there was an increased use of MV in the 2014–2016 season (RSVH: 6.9% vs. 4.2%, P = 0.009; BH: 6.3% vs. 3.7%, P = 0.003). Mean costs per hospitalization were greater for PT infants in 2014–2016 compared with 2011–2014 (RSVH: $29,382 vs. $16,572, P = 0.059; BH: $26,101 vs. $15,896, P = 0.047), whereas mean term hospitalization costs were similar (RSVH: $15,011 vs. $15,472, P = 0.705; BH: $14,555 vs. $14,603, P = 0.957). Conclusion RSVH and BH severity and per-hospitalization costs (higher among PT infants relative to term infants) increased following the 2014 AAP immunoprophylaxis guidance change. The increases are likely explained by more frequent RSV hospitalizations among higher-risk 29–34 wGA infants in 2014–2016. Funded by AstraZeneca Disclosures L. R. Krilov, AstraZeneca/MedImmune: Consultant, Research grant and Research support. J. Fergie, AstraZeneca/MedImmune: Consultant and Speaker’s Bureau, Research grant and Research support. M. Goldstein, AstraZeneca/MedImmune: Consultant, Research grant and Research support. C. Rizzo, AstraZeneca: Employee, Salary and Stocks. L. Brannman, AstraZeneca: Employee, Salary and Stocks. J. McPheeters, Optum: Employee, Salary. AstraZeneca: Research Contractor, Consulting fee. S. Korrer, Optum: Employee, Salary. AstraZeneca: Research Contractor, Consulting fee. T. Burton, Optum: Consultant and Employee, Salary. AstraZeneca: Research Contractor, Consulting fee. L. Sharpsten, Optum: Employee, Salary. AstraZeneca: Research Contractor, Consulting fee.

scholarly journals Burden of Respiratory Syncytial Virus Disease and Mortality Risk Factors in Argentina

2019 ◽  
Vol 38 (6) ◽  
pp. 589-594 ◽  
Author(s):  
Angela Gentile ◽  
María Florencia Lucion ◽  
María del Valle Juarez ◽  
María Soledad Areso ◽  
Julia Bakir ◽  
...  
Keyword(s):  
Risk Factors ◽  
Respiratory Syncytial Virus ◽  
Mortality Risk ◽  
Virus Disease ◽  
Respiratory Syncytial Virus Disease ◽  
Syncytial Virus

scholarly journals 1104. Risk Factors and Outcomes of Refractory and/or Resistant Cytomegalovirus (CMV) Infection after Allogeneic Hematopoietic Stem Cell Transplantation

2020 ◽  
Vol 7 (Supplement_1) ◽  
pp. S582-S583
Author(s):  
Eleni Karantoni ◽  
Yiqi Su ◽  
Anat Stern ◽  
Phaedon D Zavras ◽  
Sergio Giralt ◽  
...  
Keyword(s):  
Risk Factors ◽  
Overall Survival ◽  
T Cell ◽  
Panel Member ◽  
Multivariable Model ◽  
Research Support ◽  
Review Panel ◽  
Material Support ◽  
Advisory Boards ◽  
Research Grant

Abstract Background The epidemiology of CMV end-organ disease (EOD) after Hematopoietic Cell Transplant (HCT) in the era of preemptive therapy (PET) is defined. In contrast, less data exists on refractory and/or resistant (R/R) CMV. We report on 1) the incidence; 2) risk factors and outcomes of R/R CMV by 1-year post HCT. Methods Retrospective review of 167 CMV seropositive (R+) recipients of first marrow or peripheral blood HCT from 1/2014 - 12/2017 managed by PET. Refractory CMV was defined as failure to achieve >1 log10 decrease in CMV viral load (VL) and having VL >1,000 IU/mL after ≥14 day of PET. Resistant CMV required genotypic confirmation of resistance mutation(s) in UL54 and/or UL97 genes. End organ disease (EOD) was defined by standard criteria. Patients (pts) were followed through 1-year post HCT and were categorized in two mutually exclusive groups as R/R and no R/R. Demographics, clinical characteristics and outcomes were extracted from medical records and hospital databases. Univariable and multivariable logistic models were used to identify risk factors for R/R CMV. Results Of 167 PET recipients, 91 (54.5%) received ex vivo T cell depleted (TCD) HCT; 40 (24.0%) had mismatched donor; and 26 (15.6%) had multiple myeloma. 66/167 (39.5%) pts developed refractory CMV (6 pts also had resistant CMV). Time from HCT to CMV viremia was shorter in R/R group: median (IQR) 21.5 (17.2-27.8) days compared to no R/R group: 26 (19-32) days (p=0.031). Maximum VL was higher for R/R compared to no R/R: median (IQR) 9,118 (2,849-18,456) and 868 (474-1,908), respectively (p< 0.001). In multivariable model, risk factors for R/R included TCD HCT (p< 0.0001) and higher VL at PET initiation (p=0.0002). In contrast, CMV seropositive donor (p=0.035) was protective (Figure 1). CMV EOD developed in 28.2% of R/R and 16.2% of no R/R groups (p=0.085) (Figure 2). Overall survival at 1 year was 59.1% for R/R compared to 83.1% for no R/R group (p=0.00027) (Figure 3). Figure 1. Adjusted odds ratio (OR) and 95% confidence interval (CI) from multivariable model evaluating risk factors of refractory/resistant (R/R) CMV. Figure 2. Cumulative incidence curves of CMV end-organ disease (EOD) at 1-year post HCT Figure 3. Kaplan-Meier survival curves of overall survival (OS) at 1-year post HCT Conclusion 1) Refractory and/or resistant CMV occurred in 39,5% of PET recipients. 2) T-cell depletion and higher CMV VL at PET initiation were risk factors for R/R CMV in multivariable models. 3) R/R CMV was associated with more EOD and worse overall survival. Disclosures Sergio Giralt, MD, Amgen (Advisor or Review Panel member, Research Grant or Support, Served an advisory board for Amgen, Actinuum, Celgene, Johnson & Johnson, JAZZ pharmaceutical, Takeda, Novartis, KITE, and Spectrum pharma and has received research support from Amgen, Actinuum, Celgene, Johnson & Johnson, and Miltenyi, Takeda.) Miguel-Angel Perales, MD, Abbvie (Other Financial or Material Support, Honoraria from Abbvie, Bellicum, Celgene, Bristol-Myers Squibb, Incyte, Merck, Novartis, Nektar Therapeutics, Omeros, and Takeda.)ASTCT (Other Financial or Material Support, Volunteer member of the Board of Directors of American Society for Transplantation and Cellular Therapy (ASTCT), Be The Match (National Marrow Donor Program, NMDP), and the CIBMTR Cellular Immunotherapy Data Resource (CIDR) Committee)Cidara Therapeutics (Advisor or Review Panel member, Other Financial or Material Support, Serve on DSMBs for Cidara Therapeutics, Servier and Medigene, and the scientific advisory boards of MolMed and NexImmune.)Kite/Gilead (Research Grant or Support, Other Financial or Material Support, Received research support for clinical trials from Incyte, Kite/Gilead and Miltenyi Biotec.) Genovefa Papanicolaou, MD, Chimerix (Research Grant or Support)Merck&Co (Research Grant or Support, Investigator and received funding and consulting fees from Merck, Chimerix, Shire and Astellas)

scholarly journals Respiratory Syncytial Virus Immunoprophylaxis with Palivizumab: 12-Year Observational Study of Usage and Outcomes in Canada

2021 ◽  
Author(s):  
Ian Mitchell ◽  
Abby Li ◽  
Candice L. Bjornson ◽  
Krista L. Lanctot ◽  
Bosco A. Paes ◽  
...  
Keyword(s):  
Risk Factors ◽  
Respiratory Syncytial Virus ◽  
Burden Of Illness ◽  
Respiratory Illness ◽  
Smoking Exposure ◽  
Key Points ◽  
Rsv Infection ◽  
History Of ◽  
Syncytial Virus ◽  
Airway Anomalies

Objective This study aimed to evaluate palivizumab (PVZ) use, trends in indications, and outcomes of respiratory illness hospitalizations (RIH) and respiratory syncytial virus hospitalizations (RSVH). Study Design It involves a large, Canadian prospective (2005–2017) observational multicenter study of children at high risk for RSV infection. Results A total of 25,003 infants (56.3% male) were enrolled at 32 sites; 109,579 PVZ injections were administered. Indications included: prematurity (63.3%); “miscellaneous” (17.8%); hemodynamically significant congenital heart disease (10.5%); bronchopulmonary dysplasia/chronic lung disease (8.4%). The “miscellaneous” group increased over time (4.4% in 2005–2006 to 22.5% in 2016–2017) and included: trisomy 21, airway anomalies, pulmonary disorders, cystic fibrosis, neurological impairments, immunocompromised, cardiac aged >2 years, multiple conditions, and a residual “unclassified” group. Adherence measured by expected versus actual doses plus correct interdose interval was 64.7%. A total of 2,054 RIH occurred (6.9%); 198 (9.6%) required intubation. Three hundred thirty-seven hospitalized children were RSV-positive (overall RSVH 1.6%). Risk factors for RSVH included having siblings, attending daycare, family history of atopy, smoking exposure, and crowded household. Infants with 5 risk factors were 9.0 times (95% CI or confidence interval 4.4–18.2; p < 0.0005) more likely to have RSVH than infants without risk factors. Three adverse events occurred; none were fatal. Conclusion Results are relevant to both clinicians and decision-makers. We confirmed the safety of PVZ. Use of PVZ increased steadily for children with miscellaneous conditions and medical complexity. Medical and social factors pose a risk for severe RIH and RSVH with accompanying burden of illness. A vaccine that protects against RSV is urgently required. Key Points

scholarly journals 720. Respiratory and Nonrespiratory Complications Among Patients Hospitalized with Influenza, FluSurv-NET, 2016–2017

2018 ◽  
Vol 5 (suppl_1) ◽  
pp. S258-S259
Author(s):  
Shikha Garg ◽  
Charisse Nitura Cummings ◽  
Alissa O’Halloran ◽  
Pam Daily Kirley ◽  
Rachel Herlihy ◽  
...  
Keyword(s):  
Respiratory Failure ◽  
Chronic Renal Disease ◽  
Age Groups ◽  
Respiratory Complications ◽  
Research Support ◽  
Surveillance Network ◽  
Wide Range ◽  
History Of ◽  
Syncytial Virus ◽  
Research Grant

Abstract Background Influenza is most commonly associated with respiratory complications; however, nonrespiratory complications occur frequently among patients hospitalized with influenza. We used data from the Influenza Hospitalization Surveillance Network (FluSurv-NET) to describe complications recorded on discharge summaries of patients hospitalized with influenza. Methods We included children (0–17 years) and adults (≥18 years), who resided within a FluSurv-NET catchment area and were hospitalized with laboratory-confirmed influenza during 2016–2017. We abstracted data on underlying conditions and discharge diagnoses from medical charts. We calculated the frequency of respiratory and nonrespiratory complications in all age groups and used univariate and multivariable logistic regression to examine factors associated with select complications among adults. Results Among 17,489 patients, the most common respiratory complications were pneumonia (26%) and acute respiratory failure (23%) and the most common nonrespiratory complications were sepsis (16%) and acute renal failure (ARF) (12%). Complications varied by age group (figure). Pneumonia was the most common respiratory complication in all age groups except 0–4 years; among children aged 0–4 years bronchiolitis was most common (104/712; 15%). Among 97 children aged 0–4 years with bronchiolitis who underwent testing for respiratory syncytial virus (RSV), 37% had RSV. The most common nonrespiratory complication was seizures in children aged 0–17 years (17% had a history of prior seizures) and sepsis in adults. Among adults (n = 16,057), factors most strongly associated with ARF included chronic renal disease (adjusted odds ratio (AOR) 2.5; 95% confidence interval (95% CI) 2.2–2.8), male sex (AOR 1.5 95% CI 1.4–1.7) and age ≥65 years (AOR 1.4 95% CI 1.2–1.7); the factor most strongly associated with sepsis was chronic neuromuscular disease (AOR 1.5 95% CI 1.3–1.8). Conclusion Influenza hospitalizations are associated with a broad spectrum of complications including pneumonia, respiratory failure, sepsis, ARF and seizures. During the influenza season, astute clinicians should keep influenza in the differential diagnosis for patients with a wide range of presentations. :Disclosures. H. K. Talbot, sanofi pasteur: Investigator, Research grant. Gilead: Investigator, Research grant. MedImmune: Investigator, Research grant. Vaxinnate: Safety Board, none. Seqirus: Safety Board, none. E. J. Anderson, NovaVax: Grant Investigator, Research grant. Pfizer: Grant Investigator, Research grant. AbbVie: Consultant, Consulting fee. MedImmune: Investigator, Research support. PaxVax: Investigator, Research support. Micron: Investigator, Research support.

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