2024
The burden of all-cause mortality following influenza-associated hospitalizations, FluSurv-NET, 2010-2019
O’Halloran A, Millman A, Holstein R, Olsen S, Cummings C, Chai S, Kirley P, Alden N, Yousey-Hindes K, Meek J, Openo K, Fawcett E, Ryan P, Leegwater L, Henderson J, McMahon M, Lynfield R, Angeles K, Bleecker M, McGuire S, Spina N, Tesini B, Gaitan M, Lung K, Shiltz E, Thomas A, Talbott H, Schaffner W, Hill M, Reed C, Garg S. The burden of all-cause mortality following influenza-associated hospitalizations, FluSurv-NET, 2010-2019. Clinical Infectious Diseases 2024, ciae547. PMID: 39495002, DOI: 10.1093/cid/ciae547.Peer-Reviewed Original ResearchInfluenza-associated hospitalizationsInfluenza-associated deathsIn-hospitalInfluenza Hospitalization Surveillance NetworkClinical characteristics of patientsHospital dischargeLaboratory-confirmed influenzaImpact of influenzaCharacteristics of patientsAll-cause mortalityMedical conditionsDied in-hospitalFluSurv-NETInfluenza hospitalizationsPost-discharge outcomesClinical characteristicsDeath certificatesOlder patientsPost-dischargeMedian daysPost-discharge deathsInfluenzaPatientsDays post-dischargeCardiovascular disease
2023
412. Comparison of Outcomes in Pneumonia Patients Hospitalized with COVID-19 and Influenza in Connecticut, 2015-2020
Kim D, Yousey-Hindes K. 412. Comparison of Outcomes in Pneumonia Patients Hospitalized with COVID-19 and Influenza in Connecticut, 2015-2020. Open Forum Infectious Diseases 2023, 10: ofad500.482. PMCID: PMC10679268, DOI: 10.1093/ofid/ofad500.482.Peer-Reviewed Original ResearchAcute respiratory distress syndromeAge groupsFluSurv-NETRespiratory failureMedian lengthDischarge diagnosisPneumonia casesChest X-ray/CTIntensive care unit admissionEmerging Infections ProgramAcute respiratory failureCare unit admissionLaboratory-confirmed influenzaChronic lung diseaseRespiratory distress syndromeLonger median lengthCoronavirus disease 2019 (COVID-19) pandemicLength of stayChronic metabolic diseaseComparison of outcomesCOVID-19 hospitalizationHospitalized COVID-19COVID-19Disease 2019 pandemicSame age groupSeverity of influenza-associated hospitalisations by influenza virus type and subtype in the USA, 2010–19: a repeated cross-sectional study
Sumner K, Masalovich S, O’Halloran A, Holstein R, Reingold A, Kirley P, Alden N, Herlihy R, Meek J, Yousey-Hindes K, Anderson E, Openo K, Monroe M, Leegwater L, Henderson J, Lynfield R, McMahon M, McMullen C, Angeles K, Spina N, Engesser K, Bennett N, Felsen C, Lung K, Shiltz E, Thomas A, Talbot H, Schaffner W, Swain A, George A, Rolfes M, Reed C, Garg S. Severity of influenza-associated hospitalisations by influenza virus type and subtype in the USA, 2010–19: a repeated cross-sectional study. The Lancet Microbe 2023, 4: e903-e912. PMID: 37769676, PMCID: PMC10872935, DOI: 10.1016/s2666-5247(23)00187-8.Peer-Reviewed Original ResearchConceptsInfluenza virus typeInfluenza-associated hospitalisationsInfluenza seasonInfluenza B virusICU admissionMechanical ventilationSevere outcomesOdds ratioVirus typeFluSurv-NETECMO useInfluenza vaccineB virusVirus infectionLaboratory-confirmed influenza virus infectionInfluenza Hospitalization Surveillance NetworkInfluenza B virus infectionPopulation-based surveillance systemComplete chart reviewEarly antiviral treatmentHospital-onset casesInfluenza-associated outcomesRepeated cross-sectional studyInfluenza vaccination statusB virus infection
2022
Comparison of Influenza and Coronavirus Disease 2019–Associated Hospitalizations Among Children Younger Than 18 Years Old in the United States: FluSurv-NET (October–April 2017–2021) and COVID-NET (October 2020–September 2021)
Delahoy MJ, Ujamaa D, Taylor CA, Cummings C, Anglin O, Holstein R, Milucky J, O’Halloran A, Patel K, Pham H, Whitaker M, Reingold A, Chai SJ, Alden NB, Kawasaki B, Meek J, Yousey-Hindes K, Anderson EJ, Openo KP, Weigel A, Teno K, Reeg L, Leegwater L, Lynfield R, McMahon M, Ropp S, Rudin D, Muse A, Spina N, Bennett NM, Popham K, Billing LM, Shiltz E, Sutton M, Thomas A, Schaffner W, Talbot HK, Crossland MT, McCaffrey K, Hall AJ, Burns E, McMorrow M, Reed C, Havers FP, Garg S. Comparison of Influenza and Coronavirus Disease 2019–Associated Hospitalizations Among Children Younger Than 18 Years Old in the United States: FluSurv-NET (October–April 2017–2021) and COVID-NET (October 2020–September 2021). Clinical Infectious Diseases 2022, 76: e450-e459. PMID: 35594564, PMCID: PMC9129156, DOI: 10.1093/cid/ciac388.Peer-Reviewed Original ResearchConceptsCOVID-19-associated hospitalizationInfluenza-associated hospitalization ratesHospitalization ratesIntensive care unit admissionPopulation-based surveillance systemCOVID-19COVID-19 pandemicCare unit admissionInfluenza-associated hospitalizationsComparison of influenzaSARS-CoV-2FluSurv-NETICU admissionUnit admissionHospital outcomesInfluenza seasonRespiratory virusesPediatric deathsPediatric hospitalizationsRespiratory illnessSevere outcomesOngoing COVID-19 pandemicAdolescents 12HospitalizationChildren 5
2020
Respiratory and Nonrespiratory Diagnoses Associated With Influenza in Hospitalized Adults
Chow EJ, Rolfes MA, O’Halloran A, Alden NB, Anderson EJ, Bennett NM, Billing L, Dufort E, Kirley PD, George A, Irizarry L, Kim S, Lynfield R, Ryan P, Schaffner W, Talbot HK, Thomas A, Yousey-Hindes K, Reed C, Garg S. Respiratory and Nonrespiratory Diagnoses Associated With Influenza in Hospitalized Adults. JAMA Network Open 2020, 3: e201323. PMID: 32196103, PMCID: PMC7084169, DOI: 10.1001/jamanetworkopen.2020.1323.Peer-Reviewed Original ResearchConceptsLaboratory-confirmed influenzaRespiratory diagnosesInfluenza seasonAcute diagnosisInfluenza Hospitalization Surveillance NetworkPositive influenza test resultsRevision discharge diagnosis codesSeasonal influenza virus infectionCommon acute diagnosesEarly antiviral treatmentAcute kidney injuryMedical record abstractionPatient demographic characteristicsDischarge diagnosis codesBurden of infectionInfluenza virus infectionInfluenza test resultsCross-sectional studyTranscription-polymerase chain reactionIndirect fluorescent stainingInternational Statistical ClassificationSurveillance networkRelated Health ProblemsFluSurv-NETHospital outcomes
2019
LB19. Patterns of Influenza A Hospitalizations by Subtype and Age in the United States, FluSurv-NET, 2018–2019
Garg S, O’Halloran A, O’Halloran A, Cummings C, Cummings C, Holstein R, Kniss K, Anderson E, Anderson E, Bennett N, Bennett N, Billing L, Billing L, Herlihy R, Hill M, Irizarry L, Irizarry L, Kim S, Kim S, Kirley P, Lynfield R, Lynfield R, Monroe M, Monroe M, Spina N, Talbot K, Talbot K, Thomas A, Thomas A, Yousey-Hindes K, Budd A, Brammer L, Reed C, Reed C. LB19. Patterns of Influenza A Hospitalizations by Subtype and Age in the United States, FluSurv-NET, 2018–2019. Open Forum Infectious Diseases 2019, 6: s1001-s1002. PMCID: PMC6810298, DOI: 10.1093/ofid/ofz415.2502.Peer-Reviewed Original ResearchProportion of casesAge groupsFluSurv-NETHospitalization ratesVirologic surveillanceInfluenza Hospitalization Surveillance NetworkUS Public Health LaboratoriesCumulative hospitalization rateDistribution of influenzaInfluenza hospitalization ratesLaboratory-confirmed influenzaYears of agePublic health laboratoriesInfluenza resultsH1N1pdm09 virusInfluenza vaccinationHospital admissionInfluenza seasonAge-related differencesInfluenza ASubtype distributionHospitalizationSanofi PasteurUnknown subtypeH1 viruses
2017
Impact of pregnancy on observed sex disparities among adults hospitalized with laboratory‐confirmed influenza, FluSurv‐NET, 2010‐2012
Kline K, Hadler JL, Yousey‐Hindes K, Niccolai L, Kirley PD, Miller L, Anderson EJ, Monroe ML, Bohm SR, Lynfield R, Bargsten M, Zansky SM, Lung K, Thomas AR, Brady D, Schaffner W, Reed G, Garg S. Impact of pregnancy on observed sex disparities among adults hospitalized with laboratory‐confirmed influenza, FluSurv‐NET, 2010‐2012. Influenza And Other Respiratory Viruses 2017, 11: 404-411. PMID: 28703414, PMCID: PMC5596517, DOI: 10.1111/irv.12465.Peer-Reviewed Original ResearchConceptsIncidence rate ratiosInfluenza-associated hospitalizationsMale incidence rate ratiosPregnant womenLaboratory-confirmed influenza-associated hospitalizationsFemale incidence rate ratiosLaboratory-confirmed influenza casesLaboratory-confirmed influenzaLikelihood of vaccinationPopulation-based surveillanceNon-pregnant womenImpact of pregnancyNon-pregnant counterpartsCensus tract-level povertyObserved sex disparityGroup of womenTract-level povertyRace/ethnicityPregnant adult femalesFluSurv-NETHospitalized femalesInfluenza seasonAdult casesVaccination priorityVaccination rates