For contact tracing purposes, a "close contact" is anyone who spent 15 minutes or more within a 24-hour period and was within 6 feet of a person infected with COVID-19 while they were infectious (2 days before onset of symptoms to 10 days after).

Note: The New Jersey Department of Health updated its definition of close contact after the CDC issued new guidancefollowing a study that revealed frequent brief exposures to an individual with COVID-19 might lead to spread of the virus.

Source: Health Commissioner Persichilli's Remarks 10/22/20; https://www.cdc.gov/coronavirus/2019-ncov/php/contact-tracing/contact-tracing-plan/appendix.html#contact