Featured Publications
Assessing the effectiveness of COVID-19 vaccines in Pakistan: A test-negative case-control study
Nisar M, Ansari N, Malik A, Shahid S, Lalani K, Chandna M, Younus A, Hasan Z, Khan U, Khalid F, Mahesar M, Farrukh Qazi M, Yildirim I, Jehan F, Omer S. Assessing the effectiveness of COVID-19 vaccines in Pakistan: A test-negative case-control study. Journal Of Infection 2023, 86: e144-e147. PMID: 36708775, PMCID: PMC9876011, DOI: 10.1016/j.jinf.2023.01.016.Peer-Reviewed Original Research
2022
The balancing role of distribution speed against varying efficacy levels of COVID-19 vaccines under variants
Kim D, Keskinocak P, Pekgün P, Yildirim İ. The balancing role of distribution speed against varying efficacy levels of COVID-19 vaccines under variants. Scientific Reports 2022, 12: 7493. PMID: 35523832, PMCID: PMC9075929, DOI: 10.1038/s41598-022-11060-8.Peer-Reviewed Original ResearchConceptsOverall public health impactInfection attack rateCOVID-19 vaccineSARS-CoV-2Public health impactVaccine effectivenessAdverse outcomesMultiple vaccinesInitial efficacySuccessful immunization strategyImmunization strategiesVaccineLow-income countriesAttack rateEfficacyCOVID-19COVID-19 pandemicHealth impactsInfection spreadRecovered-deceased [SI(Q/F)RD] modelEfficacy levelsPandemicHospitalizationVaccinationVariantsVaccination in pediatric solid organ transplant: A primer for the immunizing clinician
Chen JK, Cheng J, Liverman R, Serluco A, Corbo H, Yildirim I. Vaccination in pediatric solid organ transplant: A primer for the immunizing clinician. Clinical Transplantation 2022, 36: e14577. PMID: 34997642, DOI: 10.1111/ctr.14577.Peer-Reviewed Original ResearchConceptsVaccine-preventable illnessesPediatric solid organ transplant recipientsSolid organ transplant recipientsPediatric solid organ transplantCorrect immunization schedulesPrevention's Advisory CommitteeOrgan transplant recipientsSolid organ transplantsInfectious Diseases SocietyTime of transplantTransplant recipientsDiseases SocietyVaccine recommendationsIncomplete immunizationImmunization scheduleAntibody titersInadequate responseOrgan transplantsElevated riskPreventable illnessMultiple guidelinesVaccine managementRapid catchDisease controlAmerican Society
2021
Resource allocation for different types of vaccines against COVID-19: Tradeoffs and synergies between efficacy and reach
Kim D, Pekgün P, Yildirim İ, Keskinocak P. Resource allocation for different types of vaccines against COVID-19: Tradeoffs and synergies between efficacy and reach. Vaccine 2021, 39: 6876-6882. PMID: 34688498, PMCID: PMC8520874, DOI: 10.1016/j.vaccine.2021.10.025.Peer-Reviewed Original ResearchMeSH KeywordsCOVID-19COVID-19 VaccinesHumansPandemicsResource AllocationSARS-CoV-2VaccinationVaccinesConceptsInfection attack rateVaccine typesDifferent vaccine typesResource-limited countriesHigh-efficacy vaccinesDifferent study parametersVaccine shortageEfficacy vaccineHealth outcomesLife-saving vaccinesVaccineVaccine distributionLow efficacyAttack rateStudy parametersEfficacyHigh efficacyCOVID-19COVID-19 pandemicDeceased (SIRD) modelDifferent resource allocation decisionsLimited accessCOVID-19 Vaccine Acceptance among Health Care Workers in the Kingdom of Saudi Arabia
Elharake JA, Galal B, Alqahtani SA, Kattan RF, Barry MA, Temsah MH, Malik AA, McFadden SM, Yildirim I, Khoshnood K, Omer SB, Memish ZA. COVID-19 Vaccine Acceptance among Health Care Workers in the Kingdom of Saudi Arabia. International Journal Of Infectious Diseases 2021, 109: 286-293. PMID: 34242765, PMCID: PMC8260488, DOI: 10.1016/j.ijid.2021.07.004.Peer-Reviewed Original ResearchConceptsHealth care workersCOVID-19 vaccineCOVID-19 vaccine acceptanceVaccine acceptanceCare workersPublic health messaging campaignsCOVID-19 vaccine concernsPotential side effectsHealth care authoritiesVaccine concernsGeneral populationSide effectsVaccineCare authoritiesSaudi ArabiaHealth officialsMessaging campaignsDemographic characteristicsCOVID-19 informationKSA MinistryDemographic differencesParticipantsSignificance of SARS-CoV-2 specific antibody testing during COVID-19 vaccine allocation
Fujimoto AB, Keskinocak P, Yildirim I. Significance of SARS-CoV-2 specific antibody testing during COVID-19 vaccine allocation. Vaccine 2021, 39: 5055-5063. PMID: 34274126, PMCID: PMC8233959, DOI: 10.1016/j.vaccine.2021.06.067.Peer-Reviewed Original ResearchConceptsInfection attack rateAntibody testingSARS-CoV-2-specific antibodiesSpecific antibody testingAttack rateCOVID-19 vaccineSingle-dose vaccineCOVID-19 vaccine allocationDose vaccineSerology testingLimited vaccinesEligible individualsVaccine deploymentVaccination planVaccine supplySusceptible individualsNumber of casesRecovered (SIR) compartmental modelPeak dayUse of antibodiesVaccine allocationVaccinePeak infectionVaccinationSpecific antibodies