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Report #2890023

Received Mar 19, 2026

ER / ED visit
A note on interpretation. VAERS reports are unverified and may be incomplete or coincidental. A report does not establish that a vaccine caused an event, and counts should not be used to calculate incidence or infer causation. Full disclaimer

Overview

Sex
Male
Age
51 yrs
State
CT
Recovered
Recovered
Vaccinated
Mar 14, 2026
Onset
Mar 14, 2026
Days to onset
0
Hospital days

Vaccines (1)

TypeNameManufacturerDoseLotRoute / Site
HEPHEP B (HEPLISAV-B)DYNAVAX TECHNOLOGIES CORPORATION2947357LA

Symptoms (8)

DiarrhoeaHyperhidrosisHypotensionMalaiseNauseaPalpitationsPruritusVomiting

Symptom narrative

On Saturday, 03/14/2026, the patient completed the full treatment session and was stable for discharge. Vital signs at that time were: BP 138/84 mmHg (standing), HR 71 bpm, RR 20 breaths/min, and temperature 97.3°F. At approximately 10:52,the patient received 0.5 mL (20 mcg) of the Heplisav-B vaccine administered intramuscularly into the left deltoid by LPN. (Lot #: 947357, Exp:05/07/2028). A few minutes after vaccine administration, the patient reported palpitations and "not feeling well." This CN2 proceeded to assess the patient. Upon evaluation, the patient was diaphoretic, nauseated, complained of abdominal urgency/diarrhea, generalized pruritus, and remained alert and oriented ×4. EMS was activated at 10:57. The patient was administered 50 mg diphenhydramine and placed on supplemental oxygen. Solu-Medrol and epinephrine were prepared for administration; however, staff held administration as EMS arrived promptly and assumed care. At the time EMS arrived, the patient exhibited generalized hives, hypotension, and active vomiting. The patient remained alert and responsive. He was transported to the Emergency Department for further evaluation and treatment. Notified were Facility Administrator, Medical Director, and Director of Operations. Note written by CN2.

Current illness

N/A

Medical history

ESRD

Other medications

allopurinol 200 mg tablet, Take 1 tablet by mouth once a day; atorvastatin 40 mg tablet, Take 1 tablet by mouth at bedtime; bumetanide 2 mg tablet, Take 1 tablet by mouth once a day; lisinopril 20 mg tablet, Take 1 tablet by mouth once a da

Allergies

Beef containing products, shellfish derived, now allergy to Heplisav B vaccine added to allergy list following the reaction.