Search and filter adverse-event reports.
1,929,324 reports(768 ms)
Next day, patient developed a white, hard, raised lump at the injection site about 3 inches in diameter.
No adverse reaction. Vaccine was expired by 5 days at administration.
No adverse reaction. Noting vaccine given 3 days after vaccine expiration.
No adverse reaction. Noting that the vaccine was given 2 days after expiration date.
Arm felt numb, Dizziness and weakness, and felt like he was going to faint and throw-up, sweating,
Immediately after injection, pt stated they felt faint, their head rolled back, they fainted, then about 30 seconds afterward they had a seizure for about 30 seconds. Pt slowly regained consciousness, followed by vomiting several times and sweating. After abo…
CNS effect, "jolts" shortness of breath
Patient reported redness and swelling in left upper arm, lack of appetite for 2 days, beginning 6 days after administration of vaccine (3/28/25). She went to her PCP on 4/4/25 and was prescribed Augmentin 875 mg twice daily for cellulitis. She reported the adv…
pt experienced symptoms when she was home after receiving 2 vaccines. She said her left arm was sore inflamed and red. her neck was flushed , red and felt like hives. she took benadryl over a couple days and started feeling better each day from 3/28/25 to 4/2…
TIA, 8 hour stroke, hospitalized. Paralysis, could not speak or move for 8 hours.
quarter size bruise at injection site, no redness, tender only upon touch.
2 hours after administering, fatigue and arm soreness started. Around 8 pm the injection site started to feel hard and swell. The next morning it was significantly swollen. The symptoms at the injection site have increased exponentially, with a welt around 6 i…
I received the Pfizer COVID-19 vaccine in my right arm on May 15,2021 and the 2nd vaccine on June 10, 2021. in July of 2021 I developed a mass in my right breast that was later diagnosed as a hamartoma wild type. In February of 2023 DCIs was visible on a mammo…
Dizziness, headache, myalgias, muscle cramping including abdominal muscles, fatigue
pt states that she was given a Pneumovax 20 shot and that shortly thereafter she developed a warm, red, indurated area on her l arm. Site was just below her l deltoid.
Clinic was downtime, Provider ordered DTAP, Nurse mistakenly thought that Pediarix was the intended vaccine request. However, Infanrix was the vaccine due/intended at this time.
Thunder clap headaches (front left side of forehead) began 3 days after first dose. They were triggered EVERY TIME I coughed, laughed hard, cried, yelled, bent over. Neurologist scheduled a CT and MRI in December 2021 and found what might be aneurysm. Brain…
vomiting, dizziness, weakness, headache
Roughly 5 mins after administration patient reported itching in ears, lightheadness, increase respiratory rate/heart rate. Patient sat down and monitored for 30 minutes where she progressively gotten better before leaving and advised to see medical attention f…
30 mins after vaccination pt couldn't feel her right leg. Vaccines were given in her L arm. Later on throat felt tight and pt felt like she couldn't swallow. No respiratory distress or difficulty breathing. Pt also w/ congestion.