Efficacy and Long-Term Safety of a Dengue Vaccine in Regions of Endemic Disease

A candidate tetravalent dengue vaccine is being assessed in three clinical trials involving more than 35,000 children between the ages of 2 and 16 years in Asian-Pacific and Latin American countries. We report the results of long-term follow-up interim analyses and integrated efficacy analyses. We are assessing the incidence of hospitalization for virologically confirmed dengue as a surrogate safety end point during follow-up in years 3 to 6 of two phase 3 trials, CYD14 and CYD15, and a phase 2b trial, CYD23/57. We estimated vaccine efficacy using pooled data from the first 25 months of CYD14 and CYD15. Follow-up data were available for 10,165 of 10,275 participants (99%) in CYD14 and 19,898 of 20,869 participants (95%) in CYD15. Data were available for 3203 of the 4002 participants (80%) in the CYD23 trial included in CYD57. During year 3 in the CYD14, CYD15, and CYD57 trials combined, hospitalization for virologically confirmed dengue occurred in 65 of 22,177 participants in the vaccine group and 39 of 11,089 participants in the control group. Pooled relative risks of hospitalization for dengue were 0.84 (95% confidence interval [CI], 0.56 to 1.24) among all participants, 1.58 (95% CI, 0.83 to 3.02) among those under the age of 9 years, and 0.50 (95% CI, 0.29 to 0.86) among those 9 years of age or older. During year 3, hospitalization for severe dengue, as defined by the independent data monitoring committee criteria, occurred in 18 of 22,177 participants in the vaccine group and 6 of 11,089 participants in the control group. Pooled rates of efficacy for symptomatic dengue during the first 25 months were 60.3% (95% CI, 55.7 to 64.5) for all participants, 65.6% (95% CI, 60.7 to 69.9) for those 9 years of age or older, and 44.6% (95% CI, 31.6 to 55.0) for those younger than 9 years of age. Although the unexplained higher incidence of hospitalization for dengue in year 3 among children younger than 9 years of age needs to be carefully monitored during long-term follow-up, the risk among children 2 to 16 years of age was lower in the vaccine group than in the control group. (Funded by Sanofi Pasteur; ClinicalTrials.gov numbers, NCT00842530, NCT01983553, NCT01373281, and NCT01374516.)..

Medienart:

Artikel

Erscheinungsjahr:

2015

Erschienen:

2015

Enthalten in:

Zur Gesamtaufnahme - volume:373

Enthalten in:

The New England journal of medicine - 373(2015), 13, Seite 1195

Sprache:

Englisch

Beteiligte Personen:

Bouckenooghe, Alain [VerfasserIn]
Hadinegoro, Sri Rezeki [Sonstige Person]
Noriega, Fernando [Sonstige Person]
Chotpitayasunondh, Tawee [Sonstige Person]
Reynales, Humberto [Sonstige Person]
Jackson, Nicholas [Sonstige Person]
Saville, Melanie [Sonstige Person]
Cortés, Margarita [Sonstige Person]
Forrat, Remi [Sonstige Person]
Frago, Carina [Sonstige Person]
Tran, Huu Ngoc [Sonstige Person]
Rivera-Medina, Doris Maribel [Sonstige Person]
Wartel, T Anh [Sonstige Person]
Dietze, Reynaldo [Sonstige Person]
Capeding, Maria Rosario [Sonstige Person]
Zambrano, Betzana [Sonstige Person]
Gailhardou, Sophia [Sonstige Person]
Muhammad Ismail, H I Hj [Sonstige Person]
Fanouillere, Karen [Sonstige Person]
Plennevaux, Eric [Sonstige Person]
Limkittikul, Kriengsak [Sonstige Person]
Arredondo-García, Jose Luis [Sonstige Person]
Chansinghakul, Danaya [Sonstige Person]
Deseda, Carmen [Sonstige Person]

Links:

www.ncbi.nlm.nih.gov
search.proquest.com

BKL:

44.60

44.00

Themen:

Care and treatment
Children
Clinical trials
Dengue
Dengue - epidemiology
Dengue - prevention & control
Dengue Vaccines - adverse effects
Dengue Vaccines - immunology
Dengue Virus - classification
Dengue fever
Dengue viruses
Health aspects
Hospitalization - statistics & numerical data
Immunization
Research
Vaccines
Vaccines, Attenuated - adverse effects
Vaccines, Attenuated - immunology
Viruses

RVK:

RVK Klassifikation

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

OLC1969954485