Definition of a COVID-19 cluster in a non-healthcare worksite
For non-healthcare worksites, a COVID-19 cluster is outlined as two or extra confirmed or possible instances amongst employees inside a 14-day interval, with a possible connection in time and place at a worksite, in employer-provided group housing, or amongst employees utilizing employer-provided transportation. Observe that in communities with substantial SARS-CoV-2 transmission, it may be anticipated for some worksites to determine two or extra instances inside a 14-day interval that aren’t related to the worksite or to employer-provided housing or transportation. This is applicable particularly to giant employers. In these circumstances, efforts must be made to find out if there are believable epidemiologic hyperlinks amongst instances within the worksite and to rule out the potential for publicity outdoors of the worksite.
Potential worksite clusters may be recognized via case investigation, contact tracing, employee complaints, or employer studies to the well being division. Relying on the power of proof, these potential clusters would possibly warrant worksite evaluation even when there usually are not but laboratory confirmed instances. The absence of laboratory affirmation alone shouldn’t at all times rule out investigating a possible worksite cluster, significantly when there could also be testing shortages or delayed check outcomes.