Many routine laboratory procedures can potentially generate aerosols and droplets that are often undetectable. The following laboratory procedures have been associated with the generation of infectious aerosols and droplets: centrifugation, pipetting, vortexing, mixing, shaking, sonicating, removing caps, decanting liquids, preparing smears, flaming slides, aliquoting and loading specimens, loading syringes, manipulating needles, syringes or sharps, aspirating and transferring blood and body fluids, subculturing blood culture bottles, spilling specimens, and cleaning up spills. For additional information, refer to the following: Guidelines for Safe Work Practices in Human and Animal Medical Diagnostic Laboratoriespdf icon Biosafety in Microbiological and Biomedical Laboratories, 5th Ed. Laboratory biosafety guidance related to the novel coronavirus (2019-nCoV)