The Steuben County Health Department says 56 cases of COVID-19 have been connected to one nursing home in the last week.
Altogether 35 residents and 21 staff members at Corning Center for Rehabilitation and Nursing have tested positive for the virus.
One of the individuals who tested positive for the virus then passed it to a student in the Campbell-Savona Junior & Senior High School.
That transmission prompted the school to close on Friday for disinfection.
Officials say contact tracing has been completed and that those who have potentially exposed – have been quarantined.