An ad hoc committee will organize a virtual "Town Hall" meeting, followed by a 1-day workshop in Washington, DC, to provide the National Institutes of Health (NIH) with input from stakeholders on the potential revision of "Biosafety in Microbiological and Biomedical Laboratories (BMBL), 5th Edition." The Town Hall meeting will consist of a public, web-based forum where members of the bio-containment laboratory community can post remarks over a six-week period for viewing and comment by colleagues and others. The agenda for the subsequent workshop will be based on the ideas raised in the Town Hall meeting. A brief summary of the presentations and discussion at the workshop will be prepared by a designated rapporteur in accordance with institutional guidelines. A record of comments from the Town Hall meeting will also be publicly available.