As a precaution, Downtown SLO has suspended its Thursday night Farmers' Market through March.
The organization says it will resume operations on April 2.
The decision was made at the direction of the California Department of Public Health.
The state has urged the cancellation of any gatherings of 250 or more people to help prevent the spread of coronavirus.
The Spartan obstacle course and trail races planned for this weekend in Santa Margarita were also canceled at the request of the San Luis Obispo County Public Health Department.
The Cayucos Sea Glass Festival has also been canceled.