A professional from the Public Health department of the city of Detroit visited the school this past Monday as a follow up for the hearing and vision screening conducted by the deparement in October. If you receive additional information from the Health department because your child(ren) did not pass the screening, please follow up with your physician. JAK. Follow up letters are mailed by the Public Health department *only* for children who may need additional follow-up (that is, no further information is sent for children who pass the screening).