developed anxiety; Chest tightness/chest congestion; shortness of breath; it felt like she had asthma; This spontaneous case was reported by a consumer and describes the occurrence of DYSPNOEA (shortness of breath), ASTHMA (it felt like she had asthma), ANXIETY (developed anxiety) and CHEST DISCOMFORT (Chest tightness/chest congestion) in a 78-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 036A21A and 028L20A) for COVID-19 vaccination.     Concurrent medical conditions included Drug allergy (atropine- high fever and vomiting) since 1952. Concomitant products included GEMFIBROZIL and AMLODIPINE for an unknown indication.   On 06-Feb-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 06-Mar-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On 10-Mar-2021, the patient experienced DYSPNOEA (shortness of breath) (seriousness criterion hospitalization), ASTHMA (it felt like she had asthma) (seriousness criterion hospitalization) and CHEST DISCOMFORT (Chest tightness/chest congestion) (seriousness criterion hospitalization). On an unknown date, the patient experienced ANXIETY (developed anxiety) (seriousness criterion hospitalization). The patient was hospitalized on 10-Mar-2021 due to ANXIETY, ASTHMA, CHEST DISCOMFORT and DYSPNOEA. The patient was treated with GUAIFENESIN (MUCINEX) for Asthma and Dyspnoea, at an unspecified dose and frequency; LORAZEPAM at a dose of 1 dosage form; SALBUTAMOL SULFATE (VENTOLIN RESPIRATOR) for Asthma, at an unspecified dose and frequency and FLUTICASONE PROPIONATE (FLOVENT HFA) on 04-May-2021 for Asthma, at an unspecified dose and frequency. At the time of the report, DYSPNOEA (shortness of breath), ASTHMA (it felt like she had asthma), ANXIETY (developed anxiety) and CHEST DISCOMFORT (Chest tightness/chest congestion) had not resolved.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On an unknown date, Blood test: normal (normal) normal. On an unknown date, Electrocardiogram: normal (normal) normal. On an unknown date, Fibrin D dimer: normal (normal) normal. On an unknown date, Troponin: negative (Negative) negative.         Patient height was 5 inches. Action taken with mRNA-1273 in response to the events were not applicable  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.   This case was linked to MOD21-032955 (Patient Link).   Most recent FOLLOW-UP information incorporated above includes: On 01-Jul-2021: Follow Up information was received on 01-Jul-2021 Patient demographics updated. patient medical history updated. Concomitant medications provided. Treatment medication was provided Start date for the events updated.  Case is upgraded to serious and seriousness criteria included hospitalization. Outcome of the events updated ( from unknown to not resolved).; 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.