Kelsie Cassell, MPH
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About
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PhD Student
Biography
I graduated from YSPH with my MPH in Spring 2017 and started the PhD in Fall 2018. My research is split between microbial analysis of Legionella in the environment and statistical modeling of sporadic legionellosis. I am particularly interested in quantifying the fluctuations of Legionella in natural reservoirs after rainfall events and modeling the influence of climate/weather on disease incidence both temporally and spatially. I have previously explored both the role of pneumococcal vaccine on antibiotic resistance and spatial trends of IPD in CT during my masters internship in Weinberger lab.
Education & Training
- MPH
- Yale School of Public Health, EMD (2017)
Research
Research at a Glance
Yale Co-Authors
Frequent collaborators of Kelsie Cassell's published research.
Publications Timeline
A big-picture view of Kelsie Cassell's research output by year.
Nicole Deziel, PhD, MHS
Julie Plano
Xiaomei Ma, PhD
11Publications
295Citations
Publications
2022
Trends in non-COVID-19 hospitalizations prior to and during the COVID-19 pandemic period, United States, 2017–2021
Cassell K, Zipfel CM, Bansal S, Weinberger DM. Trends in non-COVID-19 hospitalizations prior to and during the COVID-19 pandemic period, United States, 2017–2021. Nature Communications 2022, 13: 5930. PMID: 36209210, PMCID: PMC9546751, DOI: 10.1038/s41467-022-33686-y.Peer-Reviewed Original ResearchCitationsAltmetricMeSH Keywords and ConceptsConceptsPre-pandemic levelsLess frequent causesRate of hospitalizationIncidence rate ratiosInfectious respiratory diseaseDiagnostic chaptersHealthcare utilizationPrimary diagnosisChronic diseasesFrequent causeRespiratory diseaseHospitalizationHospitalization codesBilling databaseIntervention useRate ratioCOVID-19 pandemicDisease transmissionDiseaseCOVID-19 pandemic periodImmediate declineU.S. trendsPandemic periodHypertensionDiabetesA Tale of Four Danish Cities: Legionella pneumophila Diversity in Domestic Hot Water and Spatial Variations in Disease Incidence
Uldum S, Schjoldager L, Baig S, Cassell K. A Tale of Four Danish Cities: Legionella pneumophila Diversity in Domestic Hot Water and Spatial Variations in Disease Incidence. International Journal Of Environmental Research And Public Health 2022, 19: 2530. PMID: 35270223, PMCID: PMC8909801, DOI: 10.3390/ijerph19052530.Peer-Reviewed Original ResearchCitationsAltmetricAssessing Unconventional Oil and Gas Exposure in the Appalachian Basin: Comparison of Exposure Surrogates and Residential Drinking Water Measurements
Clark CJ, Xiong B, Soriano MA, Gutchess K, Siegel HG, Ryan EC, Johnson NP, Cassell K, Elliott EG, Li Y, Cox AJ, Bugher N, Glist L, Brenneis RJ, Sorrentino KM, Plano J, Ma X, Warren JL, Plata DL, Saiers JE, Deziel NC. Assessing Unconventional Oil and Gas Exposure in the Appalachian Basin: Comparison of Exposure Surrogates and Residential Drinking Water Measurements. Environmental Science And Technology 2022, 56: 1091-1103. PMID: 34982938, PMCID: PMC10259677, DOI: 10.1021/acs.est.1c05081.Peer-Reviewed Original ResearchCitationsAltmetric
2021
Provincial trends in Legionnaires’ disease are not explained by population structure in Denmark, 2015 to 2018
Cassell K, Thomas-Lopez D, Kjelsø C, Uldum S. Provincial trends in Legionnaires’ disease are not explained by population structure in Denmark, 2015 to 2018. Eurosurveillance 2021, 26: 2000036. PMID: 34169817, PMCID: PMC8229376, DOI: 10.2807/1560-7917.es.2021.26.25.2000036.Peer-Reviewed Original ResearchCitationsAltmetricMeSH Keywords and ConceptsConceptsRisk of LDAge groupsSex distributionHigh incidenceIncidence of diseaseHighest annual incidenceRoutine surveillance dataUnexplained high incidencePoisson regression modelsAnnual incidenceIncidenceLD casesSurveillance dataDiseaseDisease incidenceDanish provinceLD incidenceHomogenous populationRegression modelsAgeProvincial trendsRiskYearly trendsPopulationGroupEvidence for multiple cases of recurrent Legionella infection: a Danish national surveillance study
Cassell K, Kjelsø C, Weinberger DM, Uldum SA. Evidence for multiple cases of recurrent Legionella infection: a Danish national surveillance study. Thorax 2021, 76: 826-828. PMID: 33504567, DOI: 10.1136/thoraxjnl-2020-216344.Peer-Reviewed Original ResearchCitationsAltmetricConceptsEpisodes of hospitalisationNational surveillance studyHigh-risk individualsMultiple hospitalisationsRecurrent infectionsCase reportSurveillance studyLegionella infectionInfectionLegionnaires' diseaseSecond episodeHospitalisationDiseaseEpisodesIndividualsComorbiditiesReinfectionRecurrenceMultiple casesLegionnaires’ disease in the time of COVID-19
Cassell K, Davis JL, Berkelman R. Legionnaires’ disease in the time of COVID-19. Pneumonia 2021, 13: 2. PMID: 33407911, PMCID: PMC7787226, DOI: 10.1186/s41479-020-00080-5.Peer-Reviewed Original ResearchCitationsAltmetricConceptsCommunity-acquired pneumonia casesCommunity-acquired pneumoniaInitial disease presentationEpidemiologic risk factorsTimely antibiotic treatmentCOVID-19Antibiotic treatmentPneumonia casesRisk factorsDisease presentationProper diagnosisDisease casesLegionella infectionDiseasePneumoniaLegionnairesLegionella exposureExposurePatientsEtiologyIllnessInfectionCliniciansDiagnosisIndoor plumbing
2020
Comparing spatial exposure surrogates with detections and concentrations of unconventional oil and gas-related chemicals in residential drinking water
Clark C, Xiong B, Gutchess K, Ryan E, Siegel H, Cassell K, Soriano Jr M, Elliott E, Li Y, Brenneis R, Plata D, Saiers J, Deziel N. Comparing spatial exposure surrogates with detections and concentrations of unconventional oil and gas-related chemicals in residential drinking water. ISEE Conference Abstracts 2020, 2020 DOI: 10.1289/isee.2020.virtual.p-1263.Peer-Reviewed Original ResearchCitations
2019
Pneumonia
Cassell K. Pneumonia. 2019, 1-7. DOI: 10.1007/978-3-319-69892-2_817-1.Peer-Reviewed Original ResearchEstimating the True Burden of Legionnaires’ Disease
Cassell K, Gacek P, Rabatsky-Ehr T, Petit S, Cartter M, Weinberger DM. Estimating the True Burden of Legionnaires’ Disease. American Journal Of Epidemiology 2019, 188: 1686-1694. PMID: 31225857, DOI: 10.1093/aje/kwz142.Peer-Reviewed Original ResearchCitationsAltmetricMeSH Keywords and ConceptsConceptsRespiratory syncytial virusTrue burdenLegionnaires' diseaseAge groupsLD casesCommunity-acquired pneumoniaObserved incidence ratesPercentage of casesInfluenza hospitalizationsSyncytial virusIncidence rateHospitalizationClinical settingEtiological studiesStudy periodMixed effects modelsDiseasePneumoniaEstimates of numbersInfluenzaBurdenTotalPopulationLegionellaUnderdiagnosis
2018
The impact of flooding on aquatic ecosystem services
Talbot C, Bennett E, Cassell K, Hanes D, Minor E, Paerl H, Raymond P, Vargas R, Vidon P, Wollheim W, Xenopoulos M. The impact of flooding on aquatic ecosystem services. Biogeochemistry 2018, 141: 439-461. PMID: 30930510, PMCID: PMC6404734, DOI: 10.1007/s10533-018-0449-7.Peer-Reviewed Original ResearchCitationsAltmetricConceptsAquatic ecosystem servicesEcosystem servicesSmall floodsExtreme floodsEcosystem service provisionMillennium Ecosystem AssessmentLand use changeExtreme flooding eventsImpact of floodingEcosystem AssessmentUse changeAquatic ecosystemsCultural servicesPrimary productionWater regulationMajor disturbancesWater cycle intensificationFlooding eventsFlood riskGlobal flood riskFloodingFloodsEcosystemsPositive effectImpact