By CBS3 Staff

PHILADELPHIA (CBS) – The Philadelphia School District is changing its mask policy, saying cloth masks don’t offer enough protection against the coronavirus. Students and staff will now be required to wear a 3-ply, N95, KN95 or KF94 mask.

Anyone who continues to wear a cloth mask will need to wear it on top of the disposable mask.

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Free adult KN95 masks will be distributed to staff members starting Monday.

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