He has had fatigue, fever, body aches, vertigo, a little nausea, a lack of appetite and is feeling hot.; He has had fatigue, fever, body aches, vertigo, a little nausea, a lack of appetite and is feeling hot.; He has had fatigue, fever, body aches, vertigo, a little nausea, a lack of appetite and is feeling hot.; He has had fatigue, fever, body aches, vertigo, a little nausea, a lack of appetite and is feeling hot.; He has had fatigue, fever, body aches, vertigo, a little nausea, a lack of appetite and is feeling hot.; He has had fatigue, fever, body aches, vertigo, a little nausea, a lack of appetite and is feeling hot.; Feeling wiped out; sleeping extended hours; Feeling hot; This spontaneous case was reported by a patient family member or friend and describes the occurrence of PAIN (He has had fatigue, fever, body aches, vertigo, a little nausea, a lack of appetite and is feeling hot.), VERTIGO (He has had fatigue, fever, body aches, vertigo, a little nausea, a lack of appetite and is feeling hot.), DECREASED APPETITE (He has had fatigue, fever, body aches, vertigo, a little nausea, a lack of appetite and is feeling hot.), FEELING ABNORMAL (Feeling wiped out) and SOMNOLENCE (sleeping extended hours) in a 26-year-old male patient who received mRNA-1273.815 (SPIKEVAX 2023-2024) for COVID-19 prophylaxis. The occurrence of additional non-serious events is detailed below.     Previously administered products included for Product used for unknown indication: PFIZER BIONTECH COVID-19 VACCINE. Past adverse reactions to the above products included No adverse event with PFIZER BIONTECH COVID-19 VACCINE.    On 08-Nov-2023, the patient received dose of mRNA-1273.815 (SPIKEVAX 2023-2024) (unknown route) 1 dosage form. On 09-Nov-2023, the patient experienced PAIN (He has had fatigue, fever, body aches, vertigo, a little nausea, a lack of appetite and is feeling hot.), VERTIGO (He has had fatigue, fever, body aches, vertigo, a little nausea, a lack of appetite and is feeling hot.), DECREASED APPETITE (He has had fatigue, fever, body aches, vertigo, a little nausea, a lack of appetite and is feeling hot.), NAUSEA (He has had fatigue, fever, body aches, vertigo, a little nausea, a lack of appetite and is feeling hot.), PYREXIA (He has had fatigue, fever, body aches, vertigo, a little nausea, a lack of appetite and is feeling hot.) and FATIGUE (He has had fatigue, fever, body aches, vertigo, a little nausea, a lack of appetite and is feeling hot.). In November 2023, the patient experienced FEELING ABNORMAL (Feeling wiped out), SOMNOLENCE (sleeping extended hours) and FEELING HOT (Feeling hot). On 09-Nov-2023, VERTIGO (He has had fatigue, fever, body aches, vertigo, a little nausea, a lack of appetite and is feeling hot.) and NAUSEA (He has had fatigue, fever, body aches, vertigo, a little nausea, a lack of appetite and is feeling hot.) had resolved. At the time of the report, PAIN (He has had fatigue, fever, body aches, vertigo, a little nausea, a lack of appetite and is feeling hot.), DECREASED APPETITE (He has had fatigue, fever, body aches, vertigo, a little nausea, a lack of appetite and is feeling hot.), FEELING ABNORMAL (Feeling wiped out), SOMNOLENCE (sleeping extended hours), FEELING HOT (Feeling hot), PYREXIA (He has had fatigue, fever, body aches, vertigo, a little nausea, a lack of appetite and is feeling hot.) and FATIGUE (He has had fatigue, fever, body aches, vertigo, a little nausea, a lack of appetite and is feeling hot.) was resolving.        The action taken with mRNA-1273.815 (SPIKEVAX 2023-2024) (Unknown) was unknown.       The patient did not receive any other vaccines in the 4 weeks prior to COVID-19 vaccine.  Concomitant medication not reported.   The patient did not take any medications or treatments to try and help with these symptom's but had been adjusting the thermostat to help with his feelings of altered temperature. He was eating and pushing liquids on 10 Nov 2023.   This case was linked to US-MODERNATX, INC.-MOD-2023-749156 (E2B Linked Report).; Sender's Comments:  US-MODERNATX, INC.-MOD-2023-749156:Mother case