Blood clots/thrombosis/blood clot to the intestine; His sodium went low; He was dizzy with memory loss; He was dizzy with memory loss; Not able to walk; His spleen is damaged completely/spleen damage from the blood clots; Fatigue; nausea worse after eating; Not feeling good; Stomach pain; This is a spontaneous report from a contactable consumer. This consumer (patient's daughter) reported for her father (patient). A 62-year-old male patient received second dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, formulation: Solution for injection, Lot Number: ER8735, and Expiration date: Unknown), via an unspecified route of administration, administered in arm on 03May2021 10:00 (at the age of 62-year-old) as dose 2, single for COVID-19 immunization. The patient medical history included blood pressure high (from two or three years) and diabetes (from two years). The patient had no family medical history relevant to adverse event. There were no concomitant medications. Previously the patient received first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, formulation: Solution for injection, Lot Number: ER8735, and Expiration date: Unknown), administered in arm on 12Apr2021 09:30 AM (at the age of 62-year-old) for COVID-19 immunization (no reactions after first dose). The caller was a consumer called on behalf of her father who received both doses of the Pfizer COVID19 vaccine in the US. The first dose was received on 12Apr2021 while the second dose was on 03May2021. Her father was on a vacation here but not a citizen. The caller reported her father started in May2021 with stomach pain, fatigue, (sometimes nauseated, worse after eating food) nausea worse after eating, and he always complained like not feeling good. The caller reported that her father returned to India. The caller stated, on 16Jul2021, all of the sudden he was dizzy with memory loss, not able to walk, his sodium went low, and he went to the emergency room in India and was admitted to hospital on 16Jul2021 and "he is still in the hospital today". Mentioned he had thrombosis. On 16Jul2021, the also experienced blood clots/thrombosis/blood clot to the intestine. The patient was admitted to hospital and the doctor said he had blood clotting and it was going to all organs in his body. Reported he had pain in his stomach and all kinds of symptoms. Added "his spleen is damaged completely / spleen damage from the blood clots" and there were blood clots, and they are reaching everywhere including his stomach and his lung and the intestine also. The caller reported that they have many test reports, and she did not know where to send them. She did not have the results in front of her but stated she had a CT Scan, CBD, and chest X-rays. Stated the caller was just calling for any kind of recommendation. The caller wanted to know if this was a side effect with the vaccine and if we have recommendations. On an unspecified date in 2021, the patient underwent lab tests and procedures which included bile duct stone (CBD): unknown results, chest X-ray: unknown, and CT Scan: unknown results, and thrombosis: unknown results. Investigation assessment not provided. The outcome of the events was unknown.  Follow-Up (24Aug2021): Follow-up attempts are completed. No further information is expected.