3 weeks after injection: Sudden onset of hearing loss in one ear, feeling of fullness/congestion in ear. Absolutely not a bacterial ear infection - no soreness/pain, redness, or discharge. Visited an ENT Dr. and inner ear issue confirmed. Hearing test showed significant loss or hearing (loudness) and loss of word discrimination.  Fri, 2-Apr: 1st COVID shot (Moderna). Slightly sore arm, no other symptoms/side-effects, all clear in 24 hrs. Fri, 23-Apr: Relatively rapid (over an hour or so) onset of hearing loss in left ear. Feeling of fullness in left ear, thought it might be congestion.  Sat, 24-Apr: No change/improvement in hearing of feeling of fullness in left ear. Sun, 25-Apr: I started to feel dizzy. I developed vertigo, though I did not get nauseous. Slept it off. Mon, 26-Apr: Awoke with no dizziness or vertigo. No change/improvement in hearing or feeling of fullness in left ear. Dizziness returned after dinner. Vertigo followed, more severe than the previous night. Unable to walk without help. Vomited and the nausea passed. Vertigo abated a bit, though still present. Slept it off. Tue, 27-Apr: Awoke with no dizziness or vertigo. No change/improvement in hearing of feeling of fullness in left ear Wed, 28-Apr: Saw ENT. First hearing test. Test confirmed quite a bit of hearing loss in left ear and some in the right ear. Thu, 29-Apr: 2nd COVID shot (Moderna). No side-effects until evening. Slight body ache, mild headache, maybe a mild fever. Some dizziness after eating. Fri, 30-Apr: Continued mild side-effects from COVID shot. Some dizziness after eating Sat, 1-May: Side-effects from COVID shot completely gone. Left ear noticeably worse. Sounds more attenuated, speech sounded more distorted. Sun, 2-May: No improvement in hearing Mon, 3-May: 2nd hearing test. Test confirmed significantly reduced hearing (volume) and speech recognition in left ear. Agreed to steroid injections to try to clear the suspected fluid retention/swelling. Tue: 4-May: 1st eardrum injection (10 mg dexamethasone) at 11:00 AM. No noticeable effect through bedtime. Wed, 5-May: Woke up with notably improved hearing in left ear (now only 10 or 20% attenuated). However, felt dizzy as soon as I woke up. Dizziness persisted until late afternoon. Thu, 6-May: No dizziness Fri, 7-May: 2nd eardrum injection (10 mg dexamethasone) at 11:30 AM. No noticeable effect through bedtime. Sat, 8-May: No improvement in left ear hearing, mildly dizzy when I woke up, dizziness persisted until late afternoon. Hearing not great in right ear over the course of the day (maybe 20% attenuated) Sun, 9-May: Minimal improvement in left ear hearing, if any. Right ear still partially impaired. A little light headed at times, no real dizziness. Mon, 10-May: Not dizzy when I woke up at 5:30 AM. Made a cup of coffee and ate an oat bran muffin at 6:15. Felt mildly dizzy by 6:30, persisted through the day and started to abate by evening. Tue, 11-May: No dizziness when I woke up. Hearing in left ear marginally improved. 3rd eardrum injection at 4:30 PM. Wed, 12-May: Woke up with improved hearing in left ear, still some attenuation, almost no distortion, still some feeling of fullness in the ear. No dizziness. Thu, 13-May: Woke up with hearing unchanged from Wed (i.e. no back-sliding). No dizziness in AM, though slightly lightheaded. Hearing degraded as the day progressed. Fri: 14-May: Woke up with hearing worse as compared to Thursday. Feeling of congestion/fullness in ears (more on the left than the right). Slightly lightheaded, no dizziness.