Got sick again; Slept all day; Fatigue; Chills; Mild headache; Fatigue; Really bad ache/soreness across their neck at the base of their skull / back of neck became extremely sore and achy; This spontaneous case was reported by a consumer and describes the occurrence of NECK PAIN (Really bad ache/soreness across their neck at the base of their skull / back of neck became extremely sore and achy), ILLNESS (Got sick again), SOMNOLENCE (Slept all day), the second episode of FATIGUE (Fatigue) and CHILLS (Chills) in a 57-year-old male patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 046A21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     Concurrent medical conditions included Drug allergy, Food allergy, Whiplash injury (his Neck Ache/Soreness Different Than That Experienced After Vaccination) since 21-Jan-2021, Anxiety (Under Control with Medication) since 01-Jan-1989, Obstructive sleep apnea syndrome (Daily Use of CPAP Machine) since 14-Apr-2010, BPH since 11-Dec-2017, High cholesterol (Under Control with Medication) since 16-Oct-2017, Diverticulitis (Under Control by Changing to High Fiber Diet) since 13-May-2020, Hay fever and Allergy to animal dander. Concomitant products included CLONAZEPAM (KLONOPIN) for Anxiety, EZETIMIBE (ZETIA) from 14-Mar-2018 to an unknown date for Cholesterol, TRANYLCYPROMINE SULFATE (PARNATE) for Depression, LAMOTRIGINE (LAMICTAL) for Depression and Anxiety, COLECALCIFEROL, MENAQUINONE-7, PHYTOMENADIONE, RETINOL PALMITATE, TOCOPHEROL, TOCOTRIENOLS NOS (VITAMIN D COMPLEX) for Diverticulitis.    On 29-Mar-2021 at 10:10 AM, the patient received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 29-Mar-2021 at 10:20 AM, the patient experienced NECK PAIN (Really bad ache/soreness across their neck at the base of their skull / back of neck became extremely sore and achy). On 30-Mar-2021, the patient experienced CHILLS (Chills), HEADACHE (Mild headache) and the first episode of FATIGUE (Fatigue). On 02-Apr-2021, the patient experienced SOMNOLENCE (Slept all day) and the second episode of FATIGUE (Fatigue). On 30-Jul-2021 at 4:30 PM, the patient experienced ILLNESS (Got sick again). The patient was treated with PARACETAMOL (TYLENOL) at an unspecified dose and frequency. On 31-Mar-2021, NECK PAIN (Really bad ache/soreness across their neck at the base of their skull / back of neck became extremely sore and achy), CHILLS (Chills) and HEADACHE (Mild headache) had resolved. On 03-Apr-2021, SOMNOLENCE (Slept all day) had resolved. On 05-Aug-2021, ILLNESS (Got sick again) had resolved. At the time of the report, last episode of FATIGUE (Fatigue) outcome was unknown.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On an unknown date, SARS-CoV-2 antibody test: negative (Negative) Negative.     For mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown), the reporter considered NECK PAIN (Really bad ache/soreness across their neck at the base of their skull / back of neck became extremely sore and achy) to be probably related. No further causality assessments were provided for ILLNESS (Got sick again), SOMNOLENCE (Slept all day), FATIGUE (Fatigue), CHILLS (Chills), HEADACHE (Mild headache) and FATIGUE (Fatigue).    This case was linked to MOD-2021-302473 (Patient Link).   Most recent FOLLOW-UP information incorporated above includes: On 06-Sep-2021: Significant follow up information include medical history,events and Patient details.