But nearly all those infected showed no symptoms, prompting renewed calls for mass testingWith coronavirus cases rising in nearly all the region’s jails, prisons, and detention centers, Montgomery County officials set out last week to determine just how entrenched the disease had become behind bars and tested every inmate in their custody.What they found was sobering, and could indicate infection rates at corrections facilities across Southeastern Pennsylvania are several times higher than what is currently being detected.Of the 948 inmates, 177 — or roughly 18% of the county’s incarcerated...…But nearly all those infected showed no symptoms, prompting renewed calls for mass testingWith coronavirus cases rising in nearly all the region’s jails, prisons, and detention centers, Montgomery County officials set out last week to determine just how entrenched the disease had become behind bars and tested every inmate in their custody.What they found was sobering, and could indicate infection rates at corrections facilities across Southeastern Pennsylvania are several times higher than what is currently being detected.Of the 948 inmates, 177 — or roughly 18% of the county’s incarcerated...WW…