GLEN MILLS, Pa. - A Costco employee in Glen Mills has tested positive for the novel coronavirus, according to a company letter obtained by FOX 29. "We have been informed of a positive COVID-19 test for an employee who works in the Merchandising department at our location," a company spokesperson said in the letter. "The employee generally works from 4 a.m. - 12:30 p.m." The employee most recently worked at the Delaware County location on Monday, March 16. RELATED COVERAGE: How COVID-19 has impacted Delaware Valley so far Advertisement Interactive map tracks spread of COVID-19 globally WHO: Type of cough may differentiate coronavirus from cold Costco said it is cooperating with the local health department regarding the matter and will be