She felt hot to the touch; assumed she had a fever; She also had a sore right arm, where she had received the Moderna bivalentshot/she complained on pain in the right arm where she had gotten the Moderna shot; double dose of  the Moderna COVID bivalent booster; This spontaneous case was reported by a physician and describes the occurrence of FEELING HOT (She felt hot to the touch), PYREXIA (assumed she had a fever), VACCINATION SITE PAIN (She also had a sore right arm, where she had received the Moderna bivalentshot/she complained on pain in the right arm where she had gotten the Moderna shot) and ACCIDENTAL OVERDOSE (double dose of  the Moderna COVID bivalent booster) in a 6-year-old female patient who received mRNA-1273 BIVALENT .222 (MODERNA COVID-19 VACCINE, BIVALENT (ORIGINAL AND OMICRON BA.4/BA.5)) (batch no. 062F22A) for COVID-19 prophylaxis.    Co-suspect product included non-company product INFLUENZA VACCINE (FLU VACCINE VII) for an unknown indication.    Previously administered products included for Product used for unknown indication: Pfizer COVID-19 vaccine (primary doses were Pfizer COVID-19 vaccine). Past adverse reactions to the above products included No adverse event with Pfizer COVID-19 vaccine.   On 21-Oct-2022, the patient received third dose of mRNA-1273 BIVALENT .222 (MODERNA COVID-19 VACCINE, BIVALENT (ORIGINAL AND OMICRON BA.4/BA.5)) (unknown route) 1 dosage form and dose of INFLUENZA VACCINE (FLU VACCINE VII) (unknown route) 1 dosage form. On 21-Oct-2022, the patient experienced FEELING HOT (She felt hot to the touch), PYREXIA (assumed she had a fever), VACCINATION SITE PAIN (She also had a sore right arm, where she had received the Moderna bivalentshot/she complained on pain in the right arm where she had gotten the Moderna shot) and ACCIDENTAL OVERDOSE (double dose of  the Moderna COVID bivalent booster). On 21-Oct-2022, FEELING HOT (She felt hot to the touch) and PYREXIA (assumed she had a fever) had resolved. On 22-Oct-2022, VACCINATION SITE PAIN (She also had a sore right arm, where she had received the Moderna bivalentshot/she complained on pain in the right arm where she had gotten the Moderna shot) had resolved. At the time of the report, ACCIDENTAL OVERDOSE (double dose of  the Moderna COVID bivalent booster) outcome was unknown.      For mRNA-1273 BIVALENT .222 (MODERNA COVID-19 VACCINE, BIVALENT (ORIGINAL AND OMICRON BA.4/BA.5)) (Unknown), the reporter did not provide any causality assessments.   Patient received primary doses from Pfizer COVID-19 vaccine.  Relevant concomitant medications were not reported.  It was reported that patient had accidentally given a double dose of the Moderna COVID-19 bivalent booster dose. Patient had a fever after receiving the Moderna COVID-19 Bivalent booster on 21-Oct-2022, although her temperatures was never taken. She felt hot to the touch. Her fever lasted for 12 hours. She also had a sore right arm, where she had received the Moderna bivalent shot. The sore arm lasted for 36 hours. She had also received a flu shot on the left arm, on the same day, but she complained of pain in the right arm where she had gotten the Moderna shot.  Treatment information was not provided.   Most recent FOLLOW-UP information incorporated above includes: On 24-Oct-2022: Added new events.