28 Pa. Code § 27.158
A household contact of a case of shigellosis, who prepares or serves food for public consumption, who attends or works in a child care group setting in a capacity which requires contact with children, or who provides direct patient care shall be required to cease work until the contact has submitted two consecutive stool specimens, taken at least 24 hours apart and at least 48 hours after the last dose of any antimicrobial therapy, to an appropriate clinical laboratory for bacteriologic examination and the specimens are determined by the laboratory to be negative for shigella.
28 Pa. Code § 27.158
This section cited in 28 Pa. Code § 27.76 (relating to exclusion and readmission of children, and staff having contact with children, in child care group settings); 28 Pa. Code § 27.153 (relating to restrictions on food handlers); 28 Pa. Code § 27.154 (relating to restrictions on caregivers in child care group settings); and 28 Pa. Code § 27.155 (relating to restrictions on health care practitioners).