(CNN) More than 1,300 inmates have tested positive for coronavirus at three facilities in Ohio, officials said.

Mass testing is ongoing at the three facilities housing the prisoners: The Marion Correctional Institution, Pickaway Correctional Institution and Franklin Medical Center. Prison officials are isolating inmates and using sanitation crews to disinfect common areas, said spokeswoman JoEllen Smith of the Ohio Department of Rehabilitation and Correction.

So far, Marion has had 1,057 positive cases, Pickaway 202 and Franklin 101. Inmates who test positive are separated from the general public, Smith said Saturday.

Volunteer activities and visitations have been suspended and the department is working on alternative communication means for inmates. Options include one free video visit per week, two free phone calls per week and eight free emails per month, Smith said.

Meal times have been reduced to twice daily but calories have been increased from 2,500 to 2,700, Smith said. Inmates have been told to sleep head to toe to prevent further spread.

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