Received the second dose of the Moderna Covid 19 vaccine less than 25 days after receiving the first dose; Diarrehea after receiving second dose of Moderna COVID 19 vaccine; Nausea after receiving second dose of Moderna COVID 19 vaccine; Chills after receiving second dose of Moderna COVID 19 vaccine; Fever after receiving second dose of Moderna COVID 19 vaccine; This spontaneous case was reported by a consumer and describes the occurrence of DIARRHOEA (Diarrehea after receiving second dose of Moderna COVID 19 vaccine), NAUSEA (Nausea after receiving second dose of Moderna COVID 19 vaccine), CHILLS (Chills after receiving second dose of Moderna COVID 19 vaccine), PYREXIA (Fever after receiving second dose of Moderna COVID 19 vaccine) and INAPPROPRIATE SCHEDULE OF PRODUCT ADMINISTRATION (Received the second dose of the Moderna Covid 19 vaccine less than 25 days after receiving the first dose) in a 78-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 022M2704 and 041L20A) for COVID-19 vaccination.     The patient's past medical history included COVID-19 (patient had had very strong symptoms and could not breath but was not tested for it) on 27-Mar-2020, Tumor (tumor on the airway) and Tumourectomy. Concurrent medical conditions included Rheumatoid arthritis (Diagnosed at age of 19 years), Hypothyroidism, Heat sensitivity (Allergic to hot temperature), Allergy to antibiotic (allergic to all antibiotics except for Doxycycline hyclate) and Asthma. Concomitant products included LEVOTHYROXINE and HYDROXYCHLOROQUINE for an unknown indication.   On 22-Jan-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 09-Feb-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On 09-Feb-2021,  after starting mRNA-1273 (Moderna COVID-19 Vaccine), the patient experienced INAPPROPRIATE SCHEDULE OF PRODUCT ADMINISTRATION (Received the second dose of the Moderna Covid 19 vaccine less than 25 days after receiving the first dose). In 2021, the patient experienced DIARRHOEA (Diarrehea after receiving second dose of Moderna COVID 19 vaccine), NAUSEA (Nausea after receiving second dose of Moderna COVID 19 vaccine), CHILLS (Chills after receiving second dose of Moderna COVID 19 vaccine) and PYREXIA (Fever after receiving second dose of Moderna COVID 19 vaccine). The patient was treated with ASPIRIN [ACETYLSALICYLIC ACID] at an unspecified dose and frequency and IBUPROFEN at an unspecified dose and frequency. At the time of the report, DIARRHOEA (Diarrehea after receiving second dose of Moderna COVID 19 vaccine), NAUSEA (Nausea after receiving second dose of Moderna COVID 19 vaccine), CHILLS (Chills after receiving second dose of Moderna COVID 19 vaccine), PYREXIA (Fever after receiving second dose of Moderna COVID 19 vaccine) and INAPPROPRIATE SCHEDULE OF PRODUCT ADMINISTRATION (Received the second dose of the Moderna Covid 19 vaccine less than 25 days after receiving the first dose) outcome was unknown.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): In 2021, Body temperature: high (High) Fever.         After the second dose of the Moderna COVID 19 vaccine patient experienced diarrhea, nausea, chills and fever.   This case was linked to MOD-2022-534407, MOD-2022-534482, MOD-2022-534390 (Patient Link).