Close Contact Definition
Close Contact through proximity and duration of exposure: Someone who was less than 6 feet away from an infected person (laboratory-confirmed or a clinical diagnosis) for a cumulative total of 15 minutes or more over a 24-hour period (for example, three individual 5-minute exposures for a total of 15 minutes). An infected person can spread SARS-CoV-2 starting from 2 days before they have any symptoms (or, for asymptomatic patients, 2 days before the positive specimen collection date) until they meet the criteria for ending isolation.
Exception: In the K-12 indoor classroom setting or a structured outdoor setting where mask use can be observed (i.e., holding class outdoors with educator supervision), the close contact definition excludes students who were between 3 to 6 feet of an infected student (laboratory-confirmed or a clinical diagnosis) if both the infected student and the exposed student(s) correctly and consistently wore well-fitting masks the entire time.
This exception does not apply to teachers, staff, or other adults in the indoor classroom setting.