This is a fascinating enquiry but may yield no cases of the primary diseases, given their rarity. If the full CSRs are already available and searchable for LD and listeriosis, this should be easy to ascertain. If not, then I think the data holder would need to make a judgement.
Recommendation for this data request: Not Approvesee comments above. I think it is a worthwhile enquiry provided the trial databases are already easily searchable for the conditions in question.