Pain is in the abdomen and painful to touch; She was told that she has long haul Covid; Lymph nodes are extremely painful; Interchange of vaccine product; Revaccination with different COVID-19 vaccine; swelling in the pelvis, groin and upper leg area between groin and labia area, they feel hard like marbles; pain on both sides of her body; illness; experienced swollen lymph nodes; This spontaneous case was reported by a patient and describes the occurrence of SWELLING (swelling in the pelvis, groin and upper leg area between groin and labia area, they feel hard like marbles), PAIN (pain on both sides of her body), ILLNESS (illness), ABDOMINAL PAIN (Pain is in the abdomen and painful to touch) and POST-ACUTE COVID-19 SYNDROME (She was told that she has long haul Covid) in a 73-year-old female patient who received mRNA-1273 BIVALENT .222 (MODERNA COVID-19 VACCINE, BIVALENT (ORIGINAL AND OMICRON BA.4/BA.5)) (batch no. 050D22A) for COVID-19 prophylaxis. The occurrence of additional non-serious events is detailed below.     Patient had Covid test on 10 Jan 2022, and results confirmed that patient had Covid on Tuesday, 11 Jan 2022.  The patient's past medical history included COVID-19 on 11-Jan-2022. Previously administered products included for Product used for unknown indication: PFIZER BIONTECH COVID-19 VACCINE (Third dose, Lot FF2593) on 16-Nov-2021, PFIZER BIONTECH COVID-19 VACCINE (Fourth dose and Lot FP7137) on 08-Aug-2022. Past adverse reactions to the above products included No adverse event with PFIZER BIONTECH COVID-19 VACCINE and PFIZER BIONTECH COVID-19 VACCINE. Concurrent medical conditions included Food allergy (Food allergies), Hypersensitivity (Severe reactions and hypersensitivity to medications), Allergy to wool (allergies to wool), Allergy to feathers (allergies to feather) and Polymers allergy (allergies polyester).    On 06-Dec-2022, the patient received fifth dose of mRNA-1273 BIVALENT .222 (MODERNA COVID-19 VACCINE, BIVALENT (ORIGINAL AND OMICRON BA.4/BA.5)) (unknown route) 1 dosage form. On 06-Dec-2022, the patient experienced SWELLING (swelling in the pelvis, groin and upper leg area between groin and labia area, they feel hard like marbles), PAIN (pain on both sides of her body), ILLNESS (illness) and LYMPHADENOPATHY (experienced swollen lymph nodes). On an unknown date, the patient experienced ABDOMINAL PAIN (Pain is in the abdomen and painful to touch), POST-ACUTE COVID-19 SYNDROME (She was told that she has long haul Covid) and LYMPH NODE PAIN (Lymph nodes are extremely painful). an unknown date, the patient experienced INTERCHANGE OF VACCINE PRODUCTS (Interchange of vaccine product) and COVID-19 IMMUNISATION (Revaccination with different COVID-19 vaccine). At the time of the report, SWELLING (swelling in the pelvis, groin and upper leg area between groin and labia area, they feel hard like marbles), PAIN (pain on both sides of her body), ILLNESS (illness), ABDOMINAL PAIN (Pain is in the abdomen and painful to touch) and LYMPHADENOPATHY (experienced swollen lymph nodes) had not resolved and POST-ACUTE COVID-19 SYNDROME (She was told that she has long haul Covid), LYMPH NODE PAIN (Lymph nodes are extremely painful), INTERCHANGE OF VACCINE PRODUCTS (Interchange of vaccine product) and COVID-19 IMMUNISATION (Revaccination with different COVID-19 vaccine) outcome was unknown.        For mRNA-1273 BIVALENT .222 (MODERNA COVID-19 VACCINE, BIVALENT (ORIGINAL AND OMICRON BA.4/BA.5)) (Unknown), the reporter did not provide any causality assessments.   No Concomitant medications were provided.  It was reported that patient did not received any other vaccines in the 4 weeks prior to COVID-19 vaccine.   It was reported that patient received First: Moderna vaccine on 17 Feb 2021 with Lot 007M20A and Second dose on 17 Mar 2021 with Lot 030A21A.  It was reported that with last Moderna Booster, patient experienced swollen lymph nodes and pain on both sides of body which was ongoing since 06 Dec 2022 and got worse on 20 Dec 2022. Tuesday, 27 Dec 2022 makes it 3 weeks. Lymph nodes were extremely painful, swelling in the pelvis, groin and upper leg area between groin and labia area, they feel hard like marbles. The one that was the worse was on the left side near pelvic bone. Pain was in the abdomen and painful to touch. It starts first thing in the morning and by the end of day it was unbearable. Its getting worse and not getting better. On 06 Jan 2022, patient had covid symptoms, mostly sneezing, coughing, mucous, nausea, malaise, and headache. Patient was told that she has long haul Covid due to the vaccine or illness.  Treatment medications included Mitochondrial antibodies.