Age: 49.0
Sex: M
Vaccine: COVID19
Symptoms: Thrombosis, Ultrasound scan
Clinical narrative: THROMBOSIS/BLOOD CLOT BEHIND KNEE; ULTRASOUND SCAN; This spontaneous report received from patient via a Regulatory Authority Vaccine Adverse Event Reporting System (VAERS) (VAER reference number 1782551) concerned a 49 year old male. The patient's height, and weight were not reported. The patient's concurrent conditions included: shellfish allergy, environment allergies, melons allergy, seasonal (ragweed) allergy, alcohol user (Social consumption), and non-smoker, and other pre-existing medical conditions included: The patient had no current illness. The patient received covid-19 vaccine ad26.cov2.s (suspension for injection, route of admin not reported, batch number: 1808982 expiry: UNKNOWN) dose was not reported, 1 total administered to left arm on 09-APR-2021 for an unspecified indication. Concomitant medications included fish oil, and vitamins nos.  On an unspecified date in SEP-2021, the patient had travelled to his father's funeral and when he returned home, he noticed a blood clot behind his knee and then he went to his doctor who was dismissive about the clot possibility and the patient had requested an ultrasound to verify. The ultrasound showed the presence of 2 blood clots one in each leg. The patient was not sure if the clots were coincidental to his travels or not. But, he had never had this issue and thought that maybe it was related to his age. The patient felt weird as he never had never this issue until after he got the vaccine. His doctor who ordered the ultrasound had treated him with Xarelto. Laboratory data included: Ultrasound scan (NR: not provided) two blood clots. The action taken with covid-19 vaccine ad26.cov2.s was not applicable. The patient had not recovered from thrombosis/blood clot behind knee, and ultrasound scan. This report was serious (Other Medically Important Condition).  Additional information received from patient on 11-FEB-2022. The following information was updated and incorporated into case narrative:  patient's address and contact details were added, additional reporter's (contact) were added, patient age at the time of event was changed from 49 to 50 years, patient's history was added, event reported reaction term was changed from thrombosis to thrombosis/blood clot behind knee, the onset date of event was changed from 30-AUG-2021 to null flavor, the test date was changed from 30-AUG-2021 to blank, additional drug used to treat adverse event (Xarelto) was added and the narrative description was updated.; Sender's Comments: V1: This follow up version updates information about- patient's address and contact details, additional reporter's (contact), patient age at the time of event was changed from 49 to 50 years, patient's history was added, event reported reaction term was changed from thrombosis to thrombosis/blood clot behind knee, the onset date of event was changed from 30-AUG-2021 to null flavor, the test date was changed from 30-AUG-2021 to blank, additional drug used to treat adverse event (Xarelto) was added and the narrative description was updated. Updated as follows:  20211046157-Covid-19 vaccine ad26.cov2.s- thrombosis/blood clot behind knee. Follow-up received regarding Clinical Details. The event(s) has a compatible/suggestive temporal relationship, is unlabeled, and has unknown scientific plausibility. There is no information on any other factors potentially associated with the event(s). Therefore, this event(s) is considered unassessable.