Search and filter adverse-event reports.
1,929,324 reports(825 ms)
Pediatric vaccine given instead of adult vaccine requiring an additional visit and administration of the adult vaccine.
Pt was in pain immediately upon injecting of vaccine. Pt jumped and pulled away stating " it feels like you got it right in my muscle" A few hours later pt states her arm was sore and warm to the touch. The next day she was seen in office with painful left arm…
Immediately after the needle was removed, patient appear to pass out while sitting on the table for about 5-10 seconds. she reported feeling lightheaded for about 1-2 minutes after above. patient HR at the time was 65-70, O2 sats on RA 97-98 % with BP 107/70…
adult vaccine given to pediatric patient (16 years old)
Vaccine expired on 7/31/2025 and accidentally given 8/13/25. No reaction in patient noted. Situation explained to parent. Appointment given 30 days from now to repeat dose of MCV4
Redness and swelling all over thigh. About 4.5in in diameter as of today. Patient treatment as of now is Zyrtec 10ml daily.
Erythema at site of vaccination patient received Tdap and Menveo together in left deltoid, erythema appeared in the site of injection, mother was explained that is a side effect and that is expected with some vaccines. Patient was indicated to use cold compre…
1015 Heplisav B 4th dose given, 1045 pt complaint of itchiness denies SOB or Chest pain. Benadryl 50mg IVP given per protocol. Notified MD cont. to monitor V/S closely. Pt started feeling not good, oxygen 4L NC given. Pt started complaining hard to swallow…
Pt. received Tdap and MMR vaccine on 8/6/2025. Pt. states sometime 8/7/2025 she noticed that it was itchy and had a painful knot in the area where the Tdap was given. Pt. presents to medical facility today for a check up on the area. Area observed on upper rig…
pale, wanted to pass out, laying on their back and elevating their legs, supine position with legs elevated.
DTaP was inadvertently ordered and given rather than Varicella which was actually what was due. Patient has had no adverse effect of the vaccination.
Just after administration pt. was stating right arm was hurting and was a little swollen. That evening, developed a slight rash with continued pain. There was increased swelling the next day. Friday PM arm was bright red along with tight skin from shoulder to…
Left upper arm (deltoid area) with approximate 1.5 inch diameter area of subtle, macular erythema; no induration, no warmth. No treatment.
No adverse side effects noted.
Patient was administered the vaccines intended for a different patient.
Painful subcutaneous bump at the injection site still present as of 8/13/25
About 24 hours after the vaccine I developed a blister like sore in my mouth on the frenulum of my top lip, this proceeded to turn into a canker sore looking thing. I got another canker sore on the bottom left. Then I got another small bump at the very top lef…
Patient was sitting down in chair and receiving vaccines at approximately 10:30. After 5th vaccine out of 8 scheduled patient began feeling lightheaded, dizzy, and reported blurry vision. Patient became pale and sweaty and was conscious but not responding for…
Patient received 2nd vaccine around 10am and returned to the pharmacy at 3pm noting lightheadedness/dizziness and feeling "off". Her blood pressure was elevated (135/82) from her reported baseline (108/76). We gave her cold water and she sat by the pharmacy f…
HPV vaccine was administered. Approximately three minutes post-administration, the 14-year-old patient fainted, striking the back of his head on the counter during fall.