Developed floaters; Numbness to hands and Face; Tingling to Hand and face; Change in Vision with Blurry vision; Body aches; Chills; Low grade fever; Fatigue; Vertigo was bad; head pressure at base of the neck; muscle weakness, generalized muscle weakness; dizziness; her balance is off; This spontaneous case was reported by a nurse (subsequently medically confirmed) and describes the occurrence of VERTIGO (Vertigo was bad), HEAD DISCOMFORT (head pressure at base of the neck), MUSCULAR WEAKNESS (muscle weakness, generalized muscle weakness), DIZZINESS (dizziness) and BALANCE DISORDER (her balance is off) in a 40-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 039K20A and 039k20A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     Concurrent medical conditions included Drug allergy (sulfa (developed in last 3 years)) and Anxiety in 2017. Concomitant products included BUSPIRONE from 01-Mar-2020 to 23-Mar-2021 for Anxiety, PROBIOTICS NOS and MULTIVITAMINS [VITAMINS NOS] for an unknown indication.   On 28-Dec-2020, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) at an unspecified dose. On 25-Jan-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) dosage was changed to 1 dosage form. On 25-Jan-2021, the patient experienced VERTIGO (Vertigo was bad), HEAD DISCOMFORT (head pressure at base of the neck), MUSCULAR WEAKNESS (muscle weakness, generalized muscle weakness), DIZZINESS (dizziness), BALANCE DISORDER (her balance is off) and FATIGUE (Fatigue). On 26-Jan-2021, the patient experienced PAIN (Body aches), CHILLS (Chills) and PYREXIA (Low grade fever). On 05-Feb-2021, the patient experienced VISION BLURRED (Change in Vision with Blurry vision). On 08-Feb-2021, the patient experienced HYPOAESTHESIA (Numbness to hands and Face) and PARAESTHESIA (Tingling to Hand and face). On 04-Mar-2021, the patient experienced VITREOUS FLOATERS (Developed floaters). The patient was treated with MECLIZINE HCL for Vertigo, at an unspecified dose and frequency. On 27-Jan-2021, PAIN (Body aches), CHILLS (Chills) and PYREXIA (Low grade fever) had resolved. At the time of the report, VERTIGO (Vertigo was bad), HEAD DISCOMFORT (head pressure at base of the neck), MUSCULAR WEAKNESS (muscle weakness, generalized muscle weakness), DIZZINESS (dizziness), BALANCE DISORDER (her balance is off), VITREOUS FLOATERS (Developed floaters) and FATIGUE (Fatigue) outcome was unknown and VISION BLURRED (Change in Vision with Blurry vision), HYPOAESTHESIA (Numbness to hands and Face) and PARAESTHESIA (Tingling to Hand and face) had not resolved.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On 06-Feb-2021, Blood test: negative (Negative) negative. On 06-Feb-2021, Computerised tomogram: negative (Negative) negative. On 12-Feb-2021, Magnetic resonance imaging: negative (Negative) Negative. On 17-Feb-2021, Angiogram: negative consulted neurology sent to CD for CTA, labs all negative.. On 02-Mar-2021, Magnetic resonance imaging neck: negative neuro consult negative neuro exam sent for MRI of spine results (neg) for complaints. On 04-Mar-2021, Ophthalmological examination: inconclusive (Inconclusive) no real change in vision per exam despite increased blurred vision and developed floaters..     For mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular), the reporter did not provide any causality assessments.   Most recent FOLLOW-UP information incorporated above includes: On 26-Apr-2021: Chronic health conditions updated. Lab data updated.  Concomitant medication details were updated. New events are added.