Received Jun 29, 2026
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| COVID19 | COVID19 (COVID19 (UNKNOWN)) | UNKNOWN MANUFACTURER | UNK | No batch number | — |
| FLUX | INFLUENZA (SEASONAL) (NO BRAND NAME) | UNKNOWN MANUFACTURER | UNK | No batch number | — |
Concerns for a severe bacterial infection; Fever; Myalgias; Headaches; This literature report (initial receipt 16-Jun-2026) concerns an adult male patient with end-stage kidney disease (ESKD) receiving peritoneal dialysis (PD) presented to the emergency department with fever, myalgias, and headaches 1 day after receiving COVID-19 and influenza vaccinations (trade name, manufacturer and lot number not reported - to be requested upon follow up). He denied respiratory symptoms but had missed 1 PD session due to feeling unwell. His temperature was 101.5 °F, with otherwise normal vital signs. A complete blood cell count was unremarkable. However, a markedly elevated procalcitonin level of 9.1 ng/mL(reference range, 0-0.25 ng/mL) prompted admission due to concern for bacterial infection. Subsequent evaluation, including an extended respiratory viral panel, peritoneal fluid analysis, chest radiography, computed tomography of the abdomen and pelvis, and blood cultures, were unrevealing. The patient's fever resolved spontaneously without antibiotic treatment, and he was discharged home. His symptoms were ultimately attributed to a postvaccination inflammatory response. He reported doing well at a follow-up visit. This patient presented with symptoms consistent with a postvaccination inflammatory response. However, a markedly elevated procalcitonin level led to concerns for a severe bacterial infection, prompting extensive diagnostic testing and hospitalization that might have been unnecessary.; Reporter's Comments: Causality: Due to the spontaneous nature of the case, events are considered related for reporting purposes. Considering plausible temporal relationship for events pyrexia, myalgia and headache (1 day after vaccination. There is however, no plausibility for suspect to cause/contribute in development of infections like bacterial infections. Event pyrexia might be attributed to suspected bacterial infection. Of note, concomitant administration of COVID-19 vaccine might be considered as confounder.
Kidney disorder