They say the infected shopper wore a mask at the store. The department says a person who shopped at the grocery store tested positive for the virus. CORTLAND, N.Y. (WBNG) — The Cortland County Heath Department has issued a public health statement regarding Aldi’s on Route 13 in Cortland, N.Y. The department did not ask for people to self quarantine unless they are displaying symptoms of COVID-19. If you were at the store on July 30 from 11 a.m. to noon, the department asks that you monitor yourself for symptoms.