The purpose of this document is to provide public health advice to host governments, public health authorities, national or international organizers, and professional staff involved in the planning and delivery of gatherings, including people organizing smaller gatherings or attending gatherings of any type and size. 

During gatherings, the likely high density and mobility of attendees (crowding) represents a conducive environment for close, prolonged and frequent interactions between people. Furthermore, it may also be associated with the widespread adoption of risky behaviours and unsafe practices, including unsafe sexual practice, therefore playing a role in the spread of the monkeypox virus.