In this instance, the 84 customers exposed got services from the hairstylist at Great Clips, said Clay Goddard, director of the Springfield-Greene County Health Department. In addition to the customers, seven coworkers were also notified of exposure.

It’s unclear when the stylist tested positive but the infection is believed to have happened while traveling. The stylist worked May 12 through Wednesday, health officials said Friday. At the time, businesses such as barbershops and hair salons were allowed to operate in the state.

“The individual and their clients were wearing face coverings. The 84 clients potentially directly exposed will be notified by the Health Department and be offered testing, as will seven coworkers,” the Springfield-Greene County Health Department said in a statement. “It is the hope of the department that because face coverings were worn throughout this exposure timeline, no additional cases will result.”