SOME AUTOIMMUNE EFFECTS; Tooth pain; Night sweats; STOMACH BURNING SENSATION; DIFFICULTY SWALLOWING; PRESSURE CHOKING; VERTIGO; Facial pain; SUSPECTED PRODUCT CONTAMINATION; FEVER BLISTER; Foggy feeling in head; DIARRHEA; SEVERE STOMACH CRAMPS; SINUS INFLAMMATION; Sensation of pressure in ear; Injection site lump; CHILLS; FELT ILL; INJECTION SITE PAIN; FATIGUE; This spontaneous report received from a patient. 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 not reported, batch number: 1805022 expiry: UNKNOWN) dose was not reported, 1 total administered on 04-MAR-2021 to left arm for prophylactic vaccination. No concomitant medications were reported. On 05-MAR-2021, upon vaccination the patient woke up and experienced sinus inflammation, sensation of pressure in ear. On 05-MAR-2021, the patient experienced injection site lump. On 05-MAR-2021, the patient experienced chills, felt ill, injection site pain and fatigue. On 11-MAR-2021, the patient experienced severe stomach cramps and diarrhea. On 22-MAR-2021, the patient experienced foggy feeling in head. On 23-MAR-2021, the patient "believes the vaccine is contaminated", fever blister and facial pain. On 24-MAR-2021, the patient experienced vertigo. On 28-MAR-2021, the patient experienced pressure choking and difficulty swallowing. The patient visited 2 clinics and an ear, nose and throat (ENT) specialist but they were unable to diagnose and they felt there was some autoimmune effects (onset date unspecified). The patient suspected that the vaccine was contaminated based on the news report. On 02-APR-2021, the patient experienced stomach burning sensation. On 04-APR-2021, the patient experienced night sweats. On 05-APR-2021, the patient experienced tooth pain. The patient has been visited two clinic Treatment medications (dates unspecified) included: famotidine for 14 days for pressure choking and difficulty swallowing. The action taken with covid-19 vaccine ad26.cov2.s was not applicable. The patient recovered from severe stomach cramps, vertigo on 28-MAR-2021, night sweats on 06-APR-2021, stomach burning sensation on 05-APR-2021, and injection site lump, and injection site pain on 16-MAR-2021, had not recovered from felt ill, sinus inflammation, chills, fatigue, sensation of pressure in ear, tooth pain, foggy feeling in head, pressure choking, and difficulty swallowing, and the outcome of diarrhea, fever blister, facial pain, some autoimmune effects and suspected product contamination was not reported. This report was serious (Other Medically Important Condition).; Sender's Comments: v0 This report involves a patient who experienced sinus inflammation, sensation of pressure in ear, injection site lump, chills, felt ill, injection site pain and fatigue next day after receiving Janssen COVID-19 Vaccine Ad26.COV2.S for prophylactic vaccination. Approximately a week later, the patient experienced stomach cramps and diarrhea and 1.5 weeks later she had foggy feeling in head and "believes the vaccine is contaminated", had fever blister, facial pain and vertigo. Approximately 3.5 weeks after being vaccinated the patient experienced pressure choking and difficulty swallowing. A throat (ENT) specialist was unable to diagnose and they felt there was some autoimmune effects. A month after being vaccinated the patient experienced stomach burning sensation, night sweats and tooth pain. Given the close temporal relationship and the nature of the events, the events of sinus inflammation, sensation of pressure in ear, injection site lump, chills, felt ill, injection site pain and fatigue are considered related to the vaccination. The insufficient information precludes a meaningful medical assessment of the remaining events, including "autoimmune effects". The events will be assessed further when additional information is received.