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Report #2866587

Received Oct 17, 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
1.9 yrs
State
MA
Recovered
Recovered
Vaccinated
Oct 13, 2025
Onset
Oct 14, 2025
Days to onset
1
Hospital days
—

Vaccines (2)

TypeNameManufacturerDoseLotRoute / Site
COVID19COVID19 (COVID19 (MODERNA MNEXSPIKE))MODERNAUNK—IM
FLUXINFLUENZA (SEASONAL) (NO BRAND NAME)UNKNOWN MANUFACTURERUNK——

Symptoms (4)

Body temperatureLethargyPyrexiaVomiting

Symptom narrative

lethargic; vomiting (once)/patient threw up; low grade fever (temporal 99C); This spontaneous case was reported by a non-health professional and describes the occurrence of LETHARGY (lethargic), VOMITING (vomiting (once)/patient threw up) and PYREXIA (low grade fever (temporal 99C)) in a 24-month-old male patient who received mRNA-1273.251 (Spikevax LP.8.1 PFS) for COVID-19 prophylaxis. Co-suspect product included non-company product Influenza vaccine for an unknown indication. On 13-Oct-2025, the patient received dose of Influenza vaccine (unknown route) 1 dosage form. On 13-Oct-2025 at 5:20 PM, the patient received dose of mRNA-1273.251 (Spikevax LP.8.1 PFS) (Intramuscular use) 1 dosage form. On 14-Oct-2025 at 10:00 AM, the patient experienced LETHARGY (lethargic), VOMITING (vomiting (once)/patient threw up) and PYREXIA (low grade fever (temporal 99C)). On 15-Oct-2025, LETHARGY (lethargic), VOMITING (vomiting (once)/patient threw up) and PYREXIA (low grade fever (temporal 99C)) had resolved. DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On 14-Oct-2025, Body temperature: low grade fever (temporal 99C). The patient had no medical history, concomitant disease or risk factor. No concomitant medications were provided. At 5:20 on 13-Oct-2025, a shot was administered in the leg. At 10A.M, the next day, patient threw up and had low grade fever (temporal 99C). There were no lab data/results available. Patient was administered an unspecified drug 100mg twice. By 15-Oct-2025, all symptoms alleviated. The patient did not experience any additional symptoms/events. Reporter causality was not provided.

Lab data

Test Date: 20251014; Test Name: Body temperature; Result Unstructured Data: low grade fever (temporal 99C)