• While monkeypox has been endemic in about a dozen countries in Central and West Africa, the virus is not endemic in people.
  • Researchers found that a “small fraction of individuals who have disproportionately large numbers of partners” must be responsible for the sustained human-to-human transmission among men who have sex with men (MSM).
  • The researchers found sustained spread in the non-MSM population “unlikely” due to less probability of a few individuals having multiple sex partners.