the callers daughter caught Covid-19 in late December 2021/caught Covid-19 in late December 2021.; mild side effects to the booster dose. No additional side effects documented after  booster dose.; woke up with tachycardia; GI Symptoms; This spontaneous case was reported by a nurse and describes the occurrence of IMMUNISATION REACTION (mild side effects to the booster dose. No additional side effects documented after  booster dose.), TACHYCARDIA (woke up with tachycardia), GASTROINTESTINAL DISORDER (GI Symptoms) and COVID-19 (the callers daughter caught Covid-19 in late December 2021/caught Covid-19 in late December 2021.) in a 46-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) for COVID-19 vaccination.     Concurrent medical conditions included Pott's disease (Patient had autonomic nerve system damage/ due to Epstein Barre Syndrome. and then this evolved into the Dysautonomia and Potts Syndrome) since 2021, Epstein-Barr viremia (happened years before she received her Moderna Covid-19 vaccine) and Dysautonomia.   In 2021, the patient received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. In 2021, received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. In November 2021, received third dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. In November 2021, the patient experienced IMMUNISATION REACTION (mild side effects to the booster dose. No additional side effects documented after  booster dose.), TACHYCARDIA (woke up with tachycardia) and GASTROINTESTINAL DISORDER (GI Symptoms). In December 2021, the patient experienced COVID-19 (the callers daughter caught Covid-19 in late December 2021/caught Covid-19 in late December 2021.). The patient was treated with PARACETAMOL (ACETAMINOPHEN) at an unspecified dose and frequency. At the time of the report, IMMUNISATION REACTION (mild side effects to the booster dose. No additional side effects documented after  booster dose.), TACHYCARDIA (woke up with tachycardia) and GASTROINTESTINAL DISORDER (GI Symptoms) was resolving and COVID-19 (the callers daughter caught Covid-19 in late December 2021/caught Covid-19 in late December 2021.) outcome was unknown.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On 30-Dec-2021, SARS-CoV-2 test: positive (Positive) Positive. On an unknown date, Blood test: results not reported Results not reported. On an unknown date, Computerised tomogram: results not reported Results not reported. On an unknown date, Magnetic resonance imaging heart: results not reported Results not reported. On an unknown date, Tilt table test: results not reported Results not reported.     For mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown), the reporter did not provide any causality assessments.   It was reported that patient was not diagnosed with myocarditis/pericarditis.Patient was taking Beta Blocker for Dysautonomia which revealed itself as Potts Syndrome which is Postural Orthostatic Tachycardic syndrome. It was reported that patient had symptoms on 29-Dec-2022 and took treatment of Acetaminophen and Anti Inflammatory medication, Patient received no Covid-19 therapeutics. Patient did not have the history of Myocarditis/pericarditis.  Company comment: This spontaneous case concerns a 46-years-old female patient with no relevant medical history, who experienced the unexpected non-serious adverse events of special interest, COVID-19 which occurred approximately 1 month on  unspecified day   after the third dose of mRNA-1273 vaccine .The event  COVID-19 was reported as the callers daughter caught Covid-19 in late December 2021/caught Covid-19 in late December 2021.SARS-CoV-2 test was  positive as on  30-Dec-2021.Ongoing Covid 19 pandemic could be considered as confounder to the event. The benefit-risk relationship of mRNA-1273 Vaccine is not affected by this report. Event seriousness assessed as per medical judgement.   This case was linked to MOD-2022-580238, MOD-2022-580233 (Patient Link).; Sender's Comments: This spontaneous case concerns a 46-years-old female patient with no relevant medical history, who experienced the unexpected non-serious adverse events of special interest, COVID-19 which occurred approximately 1 month on  unspecified day   after the third dose of mRNA-1273 vaccine .The event  COVID-19 was reported as the callers daughter caught Covid-19 in late December 2021/caught Covid-19 in late December 2021.SARS-CoV-2 test was  positive as on  30-Dec-2021.Ongoing Covid 19 pandemic could be considered as confounder to the event. The benefit-risk relationship of mRNA-1273 Vaccine is not affected by this report. Event seriousness assessed as per medical judgement.