The Nassau County jail is dealing with a spike in coronavirus cases impacting about a fifth of its inmate population, authorities said. According to the Nassau County Sheriff’s Office, 46 male inmates — or about 21% of the 212 inmates in custody there — have been placed in quarantine after testing positive for the virus. The surge in cases at the Nassau County jail comes as Florida’s jails and prisons continue to grapple with the virus. While most inmates and staff have been cleared after testing positive, 208 inmates have died. Last month, the Jacksonville Sheriff’s Office confirmed that three inmates at the Duval County jail have died as a result of complications from COVID-19.