"IV antibiotics were given as prophylaxis in case of lung infection";; Admitted to Hospital possible due to CHF episode; progressively worsening of Shortness of Breath; pain at the site of the injection left arm; mild fever; shaking chills; This spontaneous case was reported by a consumer and describes the occurrence of CARDIAC FAILURE (Admitted to Hospital possible due to CHF episode) and PNEUMONIA ("IV antibiotics were given as prophylaxis in case of lung infection";) in a 75-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 019B21A and 023M20A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     The patient's past medical history included Congestive heart failure since an unknown date, Lymphoma in January 2021 and Chemotherapy in January 2021. Concomitant products included LEVOTHYROXINE, ACYCLOVIR [ACICLOVIR], METOPROLOL, FUROSEMIDE, ASPIRIN [ACETYLSALICYLIC ACID], ATORVASTATIN CALCIUM (LIPITOR), FOLIC ACID and GABAPENTIN for an unknown indication.   On 19-Feb-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 25-Mar-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) dosage was changed to 1 dosage form. On 25-Mar-2021,  after starting mRNA-1273 (Moderna COVID-19 Vaccine), the patient experienced CHILLS (shaking chills). On 26-Mar-2021, the patient experienced CARDIAC FAILURE (Admitted to Hospital possible due to CHF episode) (seriousness criteria hospitalization and medically significant), DYSPNOEA (progressively worsening of Shortness of Breath), VACCINATION SITE PAIN (pain at the site of the injection left arm) and PYREXIA (mild fever). 26-Mar-2021, the patient experienced PNEUMONIA ("IV antibiotics were given as prophylaxis in case of lung infection";) (seriousness criteria hospitalization and medically significant). The patient was hospitalized from 26-Mar-2021 to 28-Mar-2021 due to CARDIAC FAILURE. On 28-Mar-2021, CARDIAC FAILURE (Admitted to Hospital possible due to CHF episode) outcome was unknown. At the time of the report, PNEUMONIA ("IV antibiotics were given as prophylaxis in case of lung infection";), DYSPNOEA (progressively worsening of Shortness of Breath), VACCINATION SITE PAIN (pain at the site of the injection left arm), PYREXIA (mild fever) and CHILLS (shaking chills) outcome was unknown.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On an unknown date, Chest X-ray: normal (normal) No evidence of pulmonary embolism or any infection..         Patient received treatment of IV Lasix and IV antibiotics were given as prophylaxis in case of lung infection. Per patient blood cultures were still pending.  Patient stated that her symptoms were back to normal pre-vaccination state. Patient has scheduled to Atrial Valve replacement. 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.