This utility imports immunization records from a Texas Records Exchange (TREx) file for students who transfer from another Texas LEA or charter school. A student must be enrolled at the new district in the TxEIS Registration application prior to running the import.

• The TREx file lists immunization doses in numeric values, which are stored in TxEIS as the series number. Valid values for the series number are 1, 2, 3, and B (booster). When importing an immunization record, all doses greater than 3 are converted to B.
• You can view a list of valid TxEIS immunization types on Health > Maintenance > Tables > Immunization Type. Codes 01-31 are TxEIS-defined immunization types which can be imported. Codes 90-99 are district-defined immunization types and cannot be imported using this utility.
• The student’s SSN, gender, and date of birth on the TREx file must match the student’s data in TxEIS for the record to be imported successfully.
• The report displays immunization records that were successfully imported, duplicated, and those that could not be processed.