Hot to the Touch Injection Site; Pain Injection Site/ Tender Injection Site; Red Injection Site; Tender injection site; Delayed Injection Site Reactions; Fell sleep in a chair; Back Pain; Could hardly get up from a chair and move to the bed; Tense Back Muscles; This spontaneous case was reported by a consumer and describes the occurrence of SOMNOLENCE (Fell sleep in a chair), BACK PAIN (Back Pain), DYSSTASIA (Could hardly get up from a chair and move to the bed), MUSCLE TIGHTNESS (Tense Back Muscles) and VACCINATION SITE REACTION (Delayed Injection Site Reactions) in a 65-year-old male patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 031M20A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     No Medical History Information was reported.     On 10-Feb-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 10-Feb-2021, the patient experienced SOMNOLENCE (Fell sleep in a chair), BACK PAIN (Back Pain), DYSSTASIA (Could hardly get up from a chair and move to the bed) and MUSCLE TIGHTNESS (Tense Back Muscles). On 17-Feb-2021, the patient experienced VACCINATION SITE REACTION (Delayed Injection Site Reactions), VACCINATION SITE PAIN (Pain Injection Site/ Tender Injection Site), VACCINATION SITE ERYTHEMA (Red Injection Site) and INJECTION SITE PAIN (Tender injection site). On an unknown date, the patient experienced VACCINATION SITE WARMTH (Hot to the Touch Injection Site). On 10-Feb-2021, SOMNOLENCE (Fell sleep in a chair) had resolved. On 18-Feb-2021, VACCINATION SITE PAIN (Pain Injection Site/ Tender Injection Site), VACCINATION SITE ERYTHEMA (Red Injection Site) and INJECTION SITE PAIN (Tender injection site) outcome was unknown. At the time of the report, BACK PAIN (Back Pain), DYSSTASIA (Could hardly get up from a chair and move to the bed), MUSCLE TIGHTNESS (Tense Back Muscles), VACCINATION SITE REACTION (Delayed Injection Site Reactions) and VACCINATION SITE WARMTH (Hot to the Touch Injection Site) outcome was unknown.        The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) was unknown.       No relevant Concomitant medications were reported.   No Treatment information for the event was provided. This case was received via an unknown source (no reference has been entered for a health authority or license partner) on 22-Feb-2021 and was forwarded to Moderna on 23-Feb-2021.    This spontaneous case was reported by a consumer and describes the occurrence of SOMNOLENCE (Fell sleep in a chair), BACK PAIN (Back Pain), DYSSTASIA (Could hardly get up from a chair and move to the bed), MUSCLE TIGHTNESS (Tense Back Muscles) and VACCINATION SITE REACTION (Delayed Injection Site Reactions) in a 65-year-old male patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 031M20A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     No Medical History Information was reported.     On 10-Feb-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 10-Feb-2021, the patient experienced SOMNOLENCE (Fell sleep in a chair), BACK PAIN (Back Pain), DYSSTASIA (Could hardly get up from a chair and move to the bed) and MUSCLE TIGHTNESS (Tense Back Muscles). On 17-Feb-2021, the patient experienced VACCINATION SITE REACTION (Delayed Injection Site Reactions), VACCINATION SITE PAIN (Pain Injection Site/ Tender Injection Site), VACCINATION SITE ERYTHEMA (Red Injection Site) and INJECTION SITE PAIN (Tender injection site). On an unknown date, the patient experienced VACCINATION SITE WARMTH (Hot to the Touch Injection Site). On 10-Feb-2021, SOMNOLENCE (Fell sleep in a chair) had resolved. On 18-Feb-2021, VACCINATION SITE PAIN (Pain Injection Site/ Tender Injection Site), VACCINATION SITE ERYTHEMA (Red Injection Site) and INJECTION SITE PAIN (Tender injection site) outcome was unknown. At the time of the report, BACK PAIN (Back Pain), DYSSTASIA (Could hardly get up from a chair and move to the bed), MUSCLE TIGHTNESS (Tense Back Muscles), VACCINATION SITE REACTION (Delayed Injection Site Reactions) and VACCINATION SITE WARMTH (Hot to the Touch Injection Site) outcome was unknown.        The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) was unknown.       No relevant Concomitant medications were reported.   No Treatment information for the event was provided.