OOIR: Observatory of International Research

Papers

(The H4-Index of Vaccine is 49. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2022-01-01 to 2026-01-01.)

Article	Citations
Syncope after live attenuated influenza vaccine: Reports to the Vaccine Adverse Event Reporting System (2003–2024)	252
Reduced cell-mediated immune response in hyperglycemic NOD mice following influenza vaccination	212
Corrigendum to ‘A randomised phase 2 immunogenicity and safety study of a MF59-adjuvanted quadrivalent subunit inactivated cell-derived influenza vaccine (aQIVc) in adults aged 50 years and older’ Vac	163
Humoral and cellular immune responses induced by serogroup W135 meningococcal conjugate and polysaccharide vaccines	159
Cost-effectiveness of anti-viral treatment for infants with RSV disease in the United Kingdom	128
Evaluating concurrency and gaps between self-report and vaccine card data for COVID-19 vaccination	107
Cost of illness due to pertussis in adults ≥50 years of age in the United Kingdom	105
An observational, cohort, multi-centre, open label phase IV extension study comparing preschool DTAP-IPV booster vaccine responses in children whose mothers were randomised to one of two pertussis-con	104
Broad neutralization against SARS-CoV-2 variants induced by ancestral and B.1.351 AS03-Adjuvanted recombinant Plant-Derived Virus-Like particle vaccines	100
U.S. public support and opposition to vaccination mandates in K-12 education in light of the COVID-19 pandemic	93
Moderate effectiveness of influenza vaccine in outpatient settings: A test-negative study in Beijing, China, 2023/24 season	92
Vaccination during febrile illness, what do we know? A systematic-narrative hybrid review of the literature and international recommendations	90
Editorial Board/Aims and Scope	82
Uptake of COVID-19 vaccines among healthcare workers and the effect of nudging interventions: A mixed methods study	82
“Every interaction you have …should be an opportunity to discuss and offer influenza vaccination”. Health service perspectives on influenza vaccination promotion and delivery to Aboriginal families li	81
Knowledge, attitudes, and practices regarding seasonal influenza vaccination during pregnancy in Costa Rica: A mixed-methods study	81
Vaccine financing in the Middle East and Africa: An overview from 2010 to 2019	79
Collateral damage from debunking mRNA vaccine misinformation	79
Managing multiplicity in clinical vaccine studies – A case study using a gatekeeping testing strategy	78
A Phase 1, double-blind, randomized, placebo-controlled study to evaluate the safety and immunogenicity of a tetravalent live attenuated dengue vaccine in adults	76
Corrigendum to “Genotype prevalence and age distribution of human papillomavirus from infection to cervical cancer in Japanese women: A systematic review and meta-analysis” [Vaccine 40(41) (2022) 5971	75
Erratum to “Quadrivalent HPV vaccine effectiveness against anogenital warts: A registry-based study of 2,2 million individuals” [Vaccine 41(37) (2023) 5469-5476]	75
BBIBP-CorV vaccine effectiveness against COVID-19 in patients aged 60 years and older during the Delta-dominant period in the Federation of Bosnia and Herzegovina, a test-negative case-control study	74
Cross-protective efficacy and safety of an adenovirus-based universal influenza vaccine expressing nucleoprotein, hemagglutinin, and the ectodomain of matrix protein 2	71
The increasing age of respiratory syncytial virus-related hospitalisation during COVID-19 pandemic in Lyon was associated with reduced hospitalisation costs	70

Epidemiological characteristics and serotype distribution of culture-confirmed pediatric pneumococcal pneumonia before and after PCV 10 introduction, a multicenter study in Bogota, Colombia, 2008–2019	70
Quantitation and characterization of serotype 6A activation for pneumococcal conjugate vaccine by cryo-EM and SEC methods	65
General vaccination willingness and current vaccination status in relation to clinical and psychological variables in patients with multiple sclerosis	65
COVID-19 vaccination communication: Effects of vaccine conspiracy beliefs and message framing among black and white participants	65
Influences of sociodemographic characteristics and parental HPV vaccination hesitancy on HPV vaccination coverage in five US states	63
“Fighting the pandemic!” Western Australian pharmacists’ perspectives on COVID-19 vaccines: A qualitative study	63
Retesting the hypothesis that early Diphtheria-Tetanus-Pertussis vaccination increases female mortality: An observational study within a randomised trial	63
Behaviors, perceptions, and impact of the COVID-19 pandemic and vaccination on oncology patients in New Mexico with substantial representation of racial minorities and rural residents	62
Humoral immune response profile of a cattle herd vaccinated with 5- and 10-times Bakirköy strain sheep pox vaccine under field conditions	62
Adjuvant-dependent impacts on vaccine-induced humoral responses and protection in preclinical models of nasal and genital colonization by pathogenic Neisseria	61
Pneumonia hospitalization after introduction of pneumococcal conjugate vaccine in Japan: Descriptive study using a nationwide claims database	59
Corrigendum to “Recombinant BCGΔBCG1419c protects outbred mice against M. tuberculosis challenge” [Vaccine 61 (2025) 127347]	55
Poor association between 13-valent pneumococcal conjugate vaccine-induced serum and mucosal antibody responses with experimental Streptococcus pneumoniae serotype 6B colonisation	55
COVID-19 and seasonal flu vaccination hesitancy: Links to personality and general intelligence in a large, UK cohort	55
Letter to the editor: SARS-CoV-2 vaccination in children and adolescents with neurodevelopmental or psychiatric disorders	54
Assessing commutability of the first WHO International Standard for antiserum to respiratory syncytial virus	54
Timeliness and completeness of serial routine vaccinations among 8062 rural children in southwest China during the COVID-19 pandemic: A multi-stage stratified cluster sampling survey in 1094 villages	53
Participant-reported neurological events following immunization in the Canadian National Vaccine Safety Network-COVID-19 vaccine (CANVAS-COVID) study	52
Nationwide rollout of HPV vaccination in Nepal: Early key insights	52
Long-term impact of rotavirus vaccination on all-cause and rotavirus-specific gastroenteritis and strain distribution in Central Kenya: An 11-year interrupted time-series analysis	51
Editorial Board/Aims and Scope	51
Editorial Board/Aims and Scope	50
A Brighton Collaboration standardized template with key considerations for a benefit/risk assessment for the Medigen COVID-19 protein vaccine	50
Editorial Board/Aims and Scope	49
Immunogenicity and safety of routine 13-valent pneumococcal conjugate vaccination outside recommended age range in patients with hematological malignancies and solid tumors	49
Mass vaccination campaign during the 2016 influenza outbreak in Panama: Challenges and implications for COVID-19 vaccination efforts	49
Evaluation of dynamics of immune responses and protective efficacy in piglets immunized with an inactivated porcine reproductive and respiratory syndrome vaccine candidate	49