1st dose of the Moderna Covid-19 vaccine on 3 months ago; Itchy Sensation/ itchiness near injection site; Soreness near injection site; Redness near injection site; Rash near injection site; Swelling near the injection site; Neck Spasms - Left Side/muscle that runs along the area (trapezius) went into complete spasm/Extremely painful; Stiff neck/stiff neck on the side where the vaccine was given; Mild Itchy/Tingling Sensation in Extremities; Anaphylactic reaction/ unusual severe reaction; This case was initially received via an unknown source (no reference has been entered for a health authority or license partner) on 02-Mar-2021. The most recent information was received on 18-May-2021 and was forwarded to Moderna on 18-May-2021.    This spontaneous case was reported by a consumer and describes the occurrence of ANAPHYLACTIC REACTION (Anaphylactic reaction/ unusual severe reaction) in a 70-year-old male patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 006M20A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     No Medical History information was reported.    On 19-Feb-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. In February 2021, the patient experienced ANAPHYLACTIC REACTION (Anaphylactic reaction/ unusual severe reaction) (seriousness criterion medically significant). On 27-Feb-2021, the patient experienced MUSCLE SPASMS (Neck Spasms - Left Side/muscle that runs along the area (trapezius) went into complete spasm/Extremely painful) and VACCINATION SITE ERYTHEMA (Redness near injection site). 27-Feb-2021, the patient experienced MUSCULOSKELETAL STIFFNESS (Stiff neck/stiff neck on the side where the vaccine was given), PARAESTHESIA (Mild Itchy/Tingling Sensation in Extremities), VACCINATION SITE PRURITUS (Itchy Sensation/ itchiness near injection site), VACCINATION SITE PAIN (Soreness near injection site), VACCINATION SITE RASH (Rash near injection site) and VACCINATION SITE SWELLING (Swelling near the injection site). On an unknown date, the patient experienced PRODUCT DOSE OMISSION ISSUE (1st dose of the Moderna Covid-19 vaccine on 3 months ago). On 28-Feb-2021, MUSCLE SPASMS (Neck Spasms - Left Side/muscle that runs along the area (trapezius) went into complete spasm/Extremely painful) had resolved. At the time of the report, ANAPHYLACTIC REACTION (Anaphylactic reaction/ unusual severe reaction), MUSCULOSKELETAL STIFFNESS (Stiff neck/stiff neck on the side where the vaccine was given), PARAESTHESIA (Mild Itchy/Tingling Sensation in Extremities), PRODUCT DOSE OMISSION ISSUE (1st dose of the Moderna Covid-19 vaccine on 3 months ago), VACCINATION SITE PRURITUS (Itchy Sensation/ itchiness near injection site), VACCINATION SITE PAIN (Soreness near injection site), VACCINATION SITE ERYTHEMA (Redness near injection site), VACCINATION SITE RASH (Rash near injection site) and VACCINATION SITE SWELLING (Swelling near the injection site) had resolved.        The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) was unknown.       Based on the current available information and temporal association between the use of the product and the start date of the events, a causal relationship cannot be excluded.   Most recent FOLLOW-UP information incorporated above includes: On 18-May-2021: Event of anaphylactic reaction added. Outcome updated to recovered. Treatment information was added.