Mallory Kathryn Ellingson, MPH
About
Research
Publications
2025
Clinical effectiveness of HPV vaccine by age at vaccination: a matched case-control study
Oliveira C, Shapiro E, Sheth S, Ellingson M, Johnson N, Sullivan E, Querec T, Unger E, Niccolai L. Clinical effectiveness of HPV vaccine by age at vaccination: a matched case-control study. The Lancet Regional Health - Americas 2025, 51: 101225. PMID: 41019517, PMCID: PMC12465035, DOI: 10.1016/j.lana.2025.101225.Peer-Reviewed Original ResearchHPV vaccinationCase-control studyHuman papillomavirusVaccine effectivenessClinical effectsDose of HPV vaccineHigh-grade cervical lesionsOdds ratioBenefits of HPV vaccinationEffectiveness of HPV vaccinationMultivariable conditional logistic regression modelsVaccine-eligible womenPap smear resultsHuman papillomavirus vaccineConfidence intervalsConditional logistic regression modelsCenters for Disease Control and PreventionDisease Control and PreventionCervical lesionsSmear resultsFirst doseHPV-16Pap testControl and PreventionLogistic regression modelsInfluence of Community-Level Factors on Health Care Provider Recommendations for HPV Vaccine
Ellingson M, O’Leary S, Schwartz J, Niccolai L. Influence of Community-Level Factors on Health Care Provider Recommendations for HPV Vaccine. Pediatrics Open Science 2025, 1: 1-9. DOI: 10.1542/pedsos.2024-000263.Peer-Reviewed Original ResearchCommunity-level factorsHealth care providersHealth care provider recommendationHuman papillomavirus vaccineHuman papillomavirusInfluence of community-level factorsNon-White adolescentsZip codesNational Immunization Survey-TeenHuman papillomavirus vaccine coverageHigh-poverty zip codesRate of unemploymentAssociated with higher population densityCommunity-level educationUS Census Bureau dataAge-eligible patientsCare provider recommendationEvidence-based interventionsCensus Bureau dataPoverty statusLogistic regression analysisAdolescent raceStatistically significant interactionCare providersSurvey-Teen
2024
Mental health and lower adolescent HPV vaccine coverage
Ellingson M, Brewer N. Mental health and lower adolescent HPV vaccine coverage. The Lancet Public Health 2024, 9: e642-e643. PMID: 39214634, PMCID: PMC12042765, DOI: 10.1016/s2468-2667(24)00190-7.Peer-Reviewed Original Research
2023
Potential Impact of Higher-Valency Pneumococcal Conjugate Vaccines Among Adults in Different Localities in Germany
Ellingson M, Weinberger D, van der Linden M, Perniciaro S. Potential Impact of Higher-Valency Pneumococcal Conjugate Vaccines Among Adults in Different Localities in Germany. The Journal Of Infectious Diseases 2023, 229: 1669-1673. PMID: 38059558, PMCID: PMC11175678, DOI: 10.1093/infdis/jiad538.Peer-Reviewed Original ResearchHuman papillomavirus vaccine effectiveness by age at vaccination: A systematic review
Ellingson M, Sheikha H, Nyhan K, Oliveira C, Niccolai L. Human papillomavirus vaccine effectiveness by age at vaccination: A systematic review. Human Vaccines & Immunotherapeutics 2023, 19: 2239085. PMID: 37529935, PMCID: PMC10399474, DOI: 10.1080/21645515.2023.2239085.Peer-Reviewed Original ResearchConceptsVaccine effectivenessSystematic reviewHuman Papillomavirus Vaccine EffectivenessVaccine-type HPV infectionYounger ageHigh vaccine effectivenessHuman papillomavirus vaccineVaccine effectiveness studiesYounger age groupsAdolescents ages 15Adolescents ages 9HPV infectionHPV vaccineVaccine initiationPapillomavirus vaccineTime vaccinationAnogenital wartsCervical abnormalitiesCervical cancerDisease outcomeAge groupsOlder ageEffectiveness studiesAge 15AgeValidation of the Vaccination Trust Indicator (VTI) in a multi-country survey of adult vaccination attitudes
Ellingson M, Omer S, Sevdalis N, Thomson A. Validation of the Vaccination Trust Indicator (VTI) in a multi-country survey of adult vaccination attitudes. PLOS Global Public Health 2023, 3: e0001820. PMID: 37043441, PMCID: PMC10096184, DOI: 10.1371/journal.pgph.0001820.Peer-Reviewed Original ResearchVaccine receiptAdult vaccinationInfluenza vaccineVaccination attitudesVTI scoreVaccine attitudesTetanus toxoid-containing vaccinesInfluenza vaccine receiptLow vaccine uptakeSeasonal influenza vaccineStrong associationMultivariable logistic regressionSelf-reported receiptGeneral vaccine attitudesGeneral vaccination attitudesTen-point increaseVaccine uptakeFlu vaccineImmunization programsImmunization attitudesVaccine hesitancyInfectious diseasesLogistic regressionVaccineSix-item measure
2022
MomsTalkShots, tailored educational app, improves vaccine attitudes: a randomized controlled trial
Dudley M, Omer S, O’Leary S, Limaye R, Ellingson M, Spina C, Brewer S, Bednarczyk R, Chamberlain A, Malik F, Frew P, Church-Balin C, Riley L, Ault K, Orenstein W, Halsey N, Salmon D. MomsTalkShots, tailored educational app, improves vaccine attitudes: a randomized controlled trial. BMC Public Health 2022, 22: 2134. PMID: 36411403, PMCID: PMC9676851, DOI: 10.1186/s12889-022-14498-7.Peer-Reviewed Original ResearchConceptsInfluenza vaccine efficacyPregnant womenVaccine knowledgeProvider interventionsVaccine efficacyInfluenza diseaseVaccine intentionsVaccine attitudesPatient-level componentVaccine safety concernsPractice-level interventionPrenatal care practicesMulti-level interventionsHalf of participantsInfant vaccinesVaccine uptakeVaccine informationVaccine hesitancyStudy staffInfant's birthCare practicesBaseline surveyWomenDiseaseInterventionMulti-tiered intervention to increase maternal immunization coverage: A randomized, controlled trial
Omer SB, O'Leary ST, Bednarczyk RA, Ellingson MK, Spina CI, Dudley MZ, Chamberlain AT, Limaye RJ, Brewer SE, Frew PM, Malik FA, Orenstein W, Halsey N, Ault K, Salmon DA. Multi-tiered intervention to increase maternal immunization coverage: A randomized, controlled trial. Vaccine 2022, 40: 4955-4963. PMID: 35817646, DOI: 10.1016/j.vaccine.2022.06.055.Peer-Reviewed Original ResearchConceptsPatient-level interventionsVaccine uptakeStudy armsInfluenza vaccineLow vaccine confidenceInfluenza vaccine uptakeAcellular pertussis vaccinePatient-level barriersProvider-level interventionsEvidence-based interventionsAcellular pertussisPertussis vaccinePrimary outcomeCare clinicsPregnant womenMulti-component intervention packageControl armImmunization uptakeObstetric practiceImmunization coverageSample sizeVaccine confidenceFinal sample sizeControl groupTargeted interventionsUnderstanding the Factors Influencing Health Care Provider Recommendations about Adolescent Vaccines: A Proposed Framework
Ellingson MK, Bednarczyk RA, O’Leary S, Schwartz JL, Shapiro ED, Niccolai LM. Understanding the Factors Influencing Health Care Provider Recommendations about Adolescent Vaccines: A Proposed Framework. Journal Of Behavioral Medicine 2022, 46: 356-365. PMID: 35194726, PMCID: PMC8862696, DOI: 10.1007/s10865-022-00296-4.Peer-Reviewed Original ResearchState Laws Permitting Adolescent Consent to Human Papillomavirus Vaccination and Rates of Immunization
Torres AR, Johnson NP, Ellingson MK, Hansen CE, Oliveira CR, Niccolai LM, Sheth SS. State Laws Permitting Adolescent Consent to Human Papillomavirus Vaccination and Rates of Immunization. JAMA Pediatrics 2022, 176: 203-205. PMID: 34779839, PMCID: PMC8593826, DOI: 10.1001/jamapediatrics.2021.4591.Peer-Reviewed Original Research