VAERS Explorer
Back to explore

Report #2840794

Received May 13, 2025

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
66 yrs
State
—
Recovered
Unknown
Vaccinated
—
Onset
—
Days to onset
—
Hospital days
—

Vaccines (1)

TypeNameManufacturerDoseLotRoute / Site
COVID19COVID19 (COVID19 (MODERNA))MODERNAUNK—IM

Symptoms (3)

Neoplasm malignantWeightWeight decreased

Symptom narrative

unexplained weight-loss; This spontaneous case was reported by a patient and describes the occurrence of WEIGHT DECREASED (unexplained weight-loss) in a 66-year-old male patient who received SPIKEVAX NOS (SPIKEVAX NOS) for COVID-19 prophylaxis. No Medical History information was reported. On an unknown date, the patient received dose of SPIKEVAX NOS (SPIKEVAX NOS) (Intramuscular use) 1 dosage form. On an unknown date, the patient experienced WEIGHT DECREASED (unexplained weight-loss). At the time of the report, WEIGHT DECREASED (unexplained weight-loss) outcome was unknown. DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On an unknown date, Neoplasm malignant: but it's coming up negative. On an unknown date, Weight: unexplained weight-loss. The action taken with SPIKEVAX NOS (SPIKEVAX NOS) (Intramuscular use) was unknown. No concomitant medications were reported. It was reported that the patient had experienced unexplained weight loss and had undergone every possible test for cancer and other conditions that his doctor had conducted, but all the results had come back negative. He stated that the only possible explanation he could think of was that it might be due to the vaccine he had taken two to three years ago. It was unknown if the patient experienced any additional symptoms or events No treatment medications were reported.

Lab data

Test Name: test for cancer and everything my doctor's done; Result Unstructured Data: but it's coming up negative; Test Name: unexplained weight-loss; Result Unstructured Data: unexplained weight-loss