Serological studies are needed to understand the ongoing clade Ib mpox outbreak in the Democratic Republic of the Congo and neighboring countries. Here, the authors conduct a cross-sectional serologic...

Understanding secondary attack rates is a key knowledge gap in the ongoing clade Ib mpox virus (MPXV) outbreak in the Democratic Republic of the Congo. Here, we report the first serological study to i...

Genomic and epidemiologic data suggest that the rapid spread of mpox clade I in the Democratic Republic of the Congo has happened mostly through sexual contact within densely populated areas.