His oxygen dropped to 88%; Bronchitis, upper bronchitis infection; Meory issues, words wouldn't go together; Sleep apnea, snoring a lot; COPD; This spontaneous case was reported by a consumer (subsequently medically confirmed) and describes the occurrence of OXYGEN SATURATION DECREASED (His oxygen dropped to 88%) in a 68-year-old male patient who received mRNA-1273 (Moderna COVID-19 Vaccine) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.    Co-suspect product included non-company product AMANTADINE for an unknown indication.    The patient's past medical history included Dyskinesia. Concurrent medical conditions included Parkinson's disease. Concomitant products included RASAGILINE MESYLATE, PARACETAMOL (TYLENOL), CARBIDOPA, LEVODOPA (SINEMET), MIRABEGRON (MYRBETRIQ) and DESMOPRESSIN for an unknown indication.   On 10-Jan-2018, the patient started AMANTADINE (unknown route) 68.5 mg once a day. On 17-Jan-2018, AMANTADINE (unknown route) dosage was changed to 137 mg once a day. On 26-Mar-2021, received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On an unknown date, the patient received dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) at an unspecified dose. On 30-Mar-2021, the patient experienced OXYGEN SATURATION DECREASED (His oxygen dropped to 88%) (seriousness criterion hospitalization). On an unknown date, the patient experienced BRONCHITIS (Bronchitis, upper bronchitis infection), DISORGANISED SPEECH (Meory issues, words wouldn't go together), SLEEP APNOEA SYNDROME (Sleep apnea, snoring a lot) and CHRONIC OBSTRUCTIVE PULMONARY DISEASE (COPD). The patient was hospitalized from 30-Mar-2021 to 04-Apr-2021 due to OXYGEN SATURATION DECREASED. At the time of the report, OXYGEN SATURATION DECREASED (His oxygen dropped to 88%) and BRONCHITIS (Bronchitis, upper bronchitis infection) had resolved and DISORGANISED SPEECH (Meory issues, words wouldn't go together), SLEEP APNOEA SYNDROME (Sleep apnea, snoring a lot) and CHRONIC OBSTRUCTIVE PULMONARY DISEASE (COPD) outcome was unknown.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On 24-Dec-2020, SARS-CoV-2 test: Negative. On 24-Dec-2020, X-ray: (Inconclusive) Chest x-ray continued. On 31-Dec-2020, SARS-CoV-2 test: Negative. On 30-Mar-2021, SARS-CoV-2 test: Negative. On 30-Mar-2021, X-ray: Result not provided. On an unknown date, Oxygen saturation: 98%.     The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown) and mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown Route) was unknown.       Concomitant medication also includes RYTARY (CARBIDOPA; LEVODOPA) Capsule, 95 mg.  The patient was treated each time with unspecified steroids and antibiotics.The infection would seem to resolve then came right back. On a subsequent unspecified date, the patient visited a pulmonologist and was put on a different round of unspecified steroids, nebulizers and antibiotics and finally the bronchitis infection resolved 100%. Company comment: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; Sender's Comments: 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