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Xavier Sáez‐Llorens

Hospital del Niño · PA
🔎 Find collaborators in Epidemiology · Microbiology →
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Area of research
Epidemiology · Microbiology
Research interest
Research interests include Bacterial Infections and Vaccines, Pneumonia and Respiratory Infections, Respiratory viral infections research, and Viral Infections and Immunology Research.
h-index
45
citations
10,297
works
191
NIH funding
primary concept
Medicine
email

Recent publications

Recent Advances in Dengue Vaccines for Children: Current Evidence and Future Directions.
2026cited by 0position: contributordoi
Phase 2b bivalent GI.1/GII.4c norovirus vaccination in infants and serologic evidence that pre-existing immunity is required for broad GII.4 neutralization
2026cited by 0position: contributordoi
Political interference in vaccination policy and transnational implications for Latin America and the Caribbean
The Lancet Regional Health - Americas 2026cited by 0position: contributordoi
Lower Respiratory Tract Infections Following Respiratory Syncytial Virus Monoclonal Antibody Nirsevimab Immunization Versus Placebo: Analysis From a Phase 3 Randomized Clinical Trial (MELODY).
2025cited by 12position: contributordoi
TAK-003: development of a tetravalent dengue vaccine.
2025cited by 7position: contributordoi
Intestinal mucosal immune responses induced by novel oral poliovirus vaccine type 2 and Sabin monovalent oral poliovirus vaccine type 2: an analysis of data from four clinical trials
The Lancet Microbe 2025cited by 2position: middledoi
Pertussis Vaccination During Pregnancy: Regional Situation and Impact of Implementation on National Immunization Programs in Latin America.
2025cited by 2position: contributordoi
Safety and immunogenicity of UB-612 heterologous booster in adults primed with mRNA, adenovirus, or inactivated COVID-19 vaccines: a randomized, active-controlled, Phase 3 trial.
2025cited by 1position: contributordoi
The potential public health impact of new immunization strategies for the prevention of RSV in children in Panama.
2025cited by 0position: contributordoi
Effectiveness of pneumococcal conjugate 13-valent vaccine against severe pneumonia in Panama: a matched case-control study.
2025cited by 0position: contributordoi
Long term T cell response and safety of a tetravalent dengue vaccine in healthy children.
2024cited by 11position: contributordoi
Safety and Immunogenicity of a ChAd155-Vectored Respiratory Syncytial Virus Vaccine in Infants 6-7 Months of age: A Phase 1/2 Randomized Trial.
2024cited by 7position: contributordoi
Safety and Immunogenicity of a ChAd155-Vectored Respiratory Syncytial Virus Vaccine in Infants 6–7 Months of age: A Phase 1/2 Randomized Trial
The Journal of Infectious Diseases 2023cited by 11position: firstdoi
Three-year Efficacy and Safety of Takeda's Dengue Vaccine Candidate (TAK-003).
2022cited by 176position: contributordoi
Efficacy and safety of the CVnCoV SARS-CoV-2 mRNA vaccine candidate in ten countries in Europe and Latin America (HERALD): a randomised, observer-blinded, placebo-controlled, phase 2b/3 trial.
2022cited by 142position: contributordoi
Efficacy of a Dengue Vaccine Candidate (TAK-003) in Healthy Children and Adolescents 2 Years after Vaccination.
2022cited by 77position: contributordoi
Meningococcal disease in North America: Updates from the Global Meningococcal Initiative
Journal of Infection 2022cited by 25position: middledoi
Meningococcal disease in North America: Updates from the Global Meningococcal Initiative.
2022cited by 22position: contributordoi
Characterization of the cell-mediated immune response to Takeda's live-attenuated tetravalent dengue vaccine in adolescents participating in a phase 2 randomized controlled trial conducted in a dengue-endemic setting.
2022cited by 21position: contributordoi
Immunogenicity of a bivalent virus-like particle norovirus vaccine in children from 1 to 8 years of age: A phase 2 randomized, double-blind study.
2022cited by 21position: contributordoi
Evaluating stability of attenuated Sabin and two novel type 2 oral poliovirus vaccines in children.
2022cited by 20position: contributordoi
Safety and immunogenicity of mRNA-LNP COVID-19 vaccine CVnCoV in Latin American adults: A phase 2 randomized study.
2022cited by 16position: contributordoi
Fecal Shedding of 2 Novel Live Attenuated Oral Poliovirus Type 2 Vaccine Candidates by Healthy Infants Administered Bivalent Oral Poliovirus Vaccine/Inactivated Poliovirus Vaccine: 2 Randomized Clinical Trials.
2022cited by 15position: contributordoi
Genetic and phenotypic stability of poliovirus shed from infants who received novel type 2 or Sabin type 2 oral poliovirus vaccines in Panama: an analysis of two clinical trials.
2022cited by 13position: contributordoi
Persistence of protective anti-poliovirus antibody levels in 4-year-old children previously primed with Picovax®, a trivalent, aluminium-adjuvanted reduced dose inactivated polio vaccine.
2022cited by 1position: contributordoi
Nosocomial RSV-related in-hospital mortality in children <5 years: a global case series
2022cited by 0position: contributordoi
Efficacy and safety of the CVnCoV SARS-CoV-2 mRNA vaccine candidate in ten countries in Europe and Latin America (HERALD): a randomised, observer-blinded, placebo-controlled, phase 2b/3 trial
The Lancet Infectious Diseases 2021cited by 172position: middledoi
Safety and immunogenicity of two novel type 2 oral poliovirus vaccine candidates compared with a monovalent type 2 oral poliovirus vaccine in children and infants: two clinical trials.
2021cited by 65position: contributordoi
Safety and immunogenicity of inactivated poliovirus vaccine schedules for the post-eradication era: a randomised open-label, multicentre, phase 3, non-inferiority trial.
2021cited by 22position: contributordoi
Performance of a Point of Care Test for Detecting IgM and IgG Antibodies Against SARS-CoV-2 and Seroprevalence in Blood Donors and Health Care Workers in Panama.
2021cited by 12position: contributordoi

Grants

No grants ingested yet.

Frequent collaborators

· 13 papers (2020–2026)Xavier Sáez-Llorens · Universitat Pompeu Fabra6 papers (2020–2026)Ralf Clemens · University of Siena4 papers (2016–2022)Edson Duarte Moreira · Faculdades Oswaldo Cruz3 papers (2020–2022)Reynaldo Dietze · Instituto de Medicina Tropical3 papers (2020–2022)Shibadas Biswal · Takeda (United States)2 papers (2024–2025) · 2 papers (2025–2026)Maria Luisa Avila Aguero · Hospital Nacional de Ninos2 papers (2025–2026)Vianney Tricou · Institut Pasteur2 papers (2024–2025) · 2 papers (2016–2025) · 2 papers (2016–2025)Elizabeth B. Brickley · University of London1 papers (2025–2025) · 1 papers (2016–2016)Christopher Gast · Program for Appropriate Technology in Health1 papers (2025–2025)Eduardo López‐Medina · Advantest (Singapore)1 papers (2016–2016)Simon Nadel · Imperial College Healthcare NHS Trust1 papers (2022–2022) · 1 papers (2016–2016)Joel I. Ward · University of Warwick1 papers (2016–2016)Ivonne Torres-Atencio · American Association for the Advancement of Science1 papers (2020–2020)Heather Friberg · Public Library of Science1 papers (2024–2024)
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