305 ILCS 5/11-19
Every recipient who is of legal age, and every grantee of record of aid provided for a minor recipient, shall file with the county department or the local governmental unit, as the case may be, a statement in respect to any change occurring in his status since his application was made or the filing of his last such report, whichever is applicable. The report shall set out any changes occurring in respect to his property or need, family composition, amount of income, money contributions or other support, from whatever source. Such reports shall be required to be filed as often as may be specified by rule, and the required frequency of such reports may vary by program, geographic area, condition of employment, or such other differentiation as may be specified by rule. The Illinois Department may require that information in the reports filed under this Section include a child immunization history for recipients age 6 and under not attending school. For recipients who report that they have not obtained the immunizations in accordance with recommended schedules, the Illinois Department shall respond by providing information about the availability and location of immunization services and shall transmit the immunization history information to the Healthy Kids Program administered under Section 5-19 of this Code.
305 ILCS 5/11-19