You did a good work. I do, however, have a few things to suggest about your CRF.
The screening part is mainly about inclusion/exclusion criteria, right? There are spaces between each item and it may confuse someone whether there should be any information filled inside them (date of vaccination or other thing).
There should also be a separate section clearly state that this subject is eligible for trial or not in case the reviewer is trying to figure out who to include in the trial.
The local reactions should have an optional field in case there is any other reaction occurred.
The laboratory section, the WBC item should be in _____ x 10^n cells/mm3 instead of ____ / mm3. An influenza antibody (hemagglutination) titre consists of subset of strains, you may want to include them as well.
This is only my personal suggestion. Please feel free to correct me if there is any misunderstanding.