SLIGHT PARALYSIS ON THE RIGHT SIDE OF THE BODY; GUILLIAN-BARRE SIDE EFFECTS; BODY SWELLED UP REALLY BAD/SWELLING CAME BACK; This spontaneous report received from a patient concerned a 48 year old male of unspecified race and ethnicity. The patient's weight, height, and medical history were not reported. The patient received covid-19 vaccine ad26.cov2.s (suspension for injection, route of admin, and batch number were not reported, expiry: UNKNOWN) dose was not reported, 1 total, administered on MAY-2021 for covid-19 prophylaxis. Age at time of vaccination 5 decade old. The batch number was not reported and has been requested. No concomitant medications were reported.  On an unspecified date in MAY-2021, patient got the Janssen COVID Vaccine. The day after patient got the vaccine in MAY-2021, patient's whole body swelled up really bad. Patient's roommates noticed it. Patient did not think nothing of it. The swelling went down. It had probably been two months and then it (swelling) all came back.  On an unspecified date, patient was getting the same thing and slight paralysis on the right side of the body. Patient had been experiencing side effects and now it was affecting the quality of life. Patient had multiple different side symptoms. Lately, it seemed like patient was losing feeling in body and extreme sensations. Patient needed help coping with the side effects and it pointed to the Janssen vaccine. Patient needed help with treatment. The doctors were not willing to treat the symptoms patient were going through. It had not been proven the side effects from the vaccine were permanent. Patient's body and legs were feeling the same way now as they were (after patient had gotten the vaccine). Patient needed help and patient was suffering from the long term side effects from this vaccine. Patient's doctor was not willing to help and was vague. Patient was in the process of getting another doctor. Patient went to the ER (emergency room) and they said they cannot help. It was obvious patient was suffering from Guillian Barre side effect. Patient was happy to got the vaccine for herd immunity but now patient was really suffering. At the end, patient stated, if I was going to have neurological issues from the vaccine, I would not have taken it. The action taken with covid-19 vaccine ad26.cov2.s was not applicable. The patient had not recovered from guillian-barre side effects, and the outcome of body swelled up really bad/swelling came back and slight paralysis on the right side of the body was not reported. This report was serious (Other Medically Important Condition).  This report was associated with product quality complaint 90000271341.; Sender's Comments: V0: 20230234572-Guillian-Barre side effects. The event has an unknown/unclear temporal relationship, and is labeled. There is no information on any other factors potentially associated with the event. Therefore, this event is considered consistent with vaccine administration. 20230234572-slight paralysis on the right side of the body. The event has an unknown/unclear temporal relationship, is unlabeled, and has unknown scientific plausibility. There is no information on any other factors potentially associated with the event. Therefore, the WHO Causality is considered indeterminate. The company causality is considered unassessable.