Received Oct 8, 2025
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| YF | YELLOW FEVER (YF-VAX) | SANOFI PASTEUR | UNK | — | OT |
develop dysbiosis; develop dysbiosis characterized with an overgrowth of streptococcus; Initial information received on 03-Oct-2025 regarding an unsolicited valid Non-serious case received from a pharmacist. This case involves Adult and unknown gender patient who had develop dysbiosis characterized with an overgrowth of streptococcus after receiving Yellow fever vaccine- [YF-VAX]. The patient's past medical history, medical treatment(s), vaccination(s) and family history were not provided. On an unknown date, the patient received a dose of suspect Yellow fever vaccine- Solution for injection (strength, expiry date and lot number not reported) via unknown route in unknown administration site for prophylactic vaccination (immunization). Information regarding batch number and expiration date corresponding to the one at time of event occurrence was requested. On an unknown date the patient developed develop dysbiosis characterized with an overgrowth of streptococcus (dysbiosis) (streptococcal infection) (unknown latency). Reportedly, overgrowth of streptococcus needing to be treated with bacteriophages. Action taken: not applicable. It was not reported if the patient received a corrective treatment for both events. At time of reporting, the outcome was Unknown for both events