A booster dose of Sanofi’s Dengvaxia tetravalent dengue vaccine “does not elicit a consistent, meaningful booster effect” against all dengue serotypes in people previously exposed to the virus, according to a Phase 2 non-inferiority study published Tuesday in The Lancet Infectious Diseases.
The Sanofi-funded study—conducted in Colombia and the Philippines—tested an additional dose of the live attenuated shot administered one or two years after a two- or three-dose primary series in…