Rapid Decline of Mpox Antibody Responses Following MVA-BN Vaccination.

ABSTRACT: The replication-incompetent modified vaccinia Ankara-Bavarian Nordic vaccine (MVA-BN; Jynneos) was deployed during the 2022 clade IIb mpox outbreak. On August 14, 2024, the World Health Organization declared the mpox clade Ib outbreak in the Democratic Republic of the Congo a public health emergency of international concern, which has raised the question about the durability of vaccine immunity after MVA-BN vaccination. In this study, we show that the MVA-BN vaccine generated mpox serum antibody responses that largely waned after 6-12 months.

SUBMITTER: Collier AY 

PROVIDER: S-EPMC11419240 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature