37N-33924-08196 · OpenVSafe

Timeline

Registration Vaccinations Survey responses Call reports Cases without a report Call attempts Call successful Pregnancy survey

2021-08-10
Dose 1 — Pfizer-BioNTech
2021-08-11
Registered in v-safe
2021-08-11
Survey response — days 1–6 daily, dose 1
MedDRA: Immediate post-injection reaction, Syncope — Feeling: Fair · Site: Pain · Fatigue or tiredness · Get care from a doctor or other healthcare professional · Emergency room or emergency department visit

Free text: Syncope after injection

MedDRA releases: 2021-09,2024-11 · check-in free text available
2021-08-11
Report sent to call center — days 1–6 daily, dose 1
Get care from a doctor or other healthcare professional

1 call case(s)
2021-08-12
Health check-in — day 21, dose 1, dependent
Feeling: Good

Adult check-in
2021-08-12
Call 1 — Could Not Reach Participant
2021-08-13
Health check-in — days 1–6 daily, dose 1
Feeling: Good · Fatigue or tiredness

Adult check-in
2021-08-16
Health check-in — days 1–6 daily, dose 1
Feeling: Good · None

Adult check-in

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-08-10	Pfizer-BioNTech	No

Call center

Reported	Outcome	VAERS-related outcome
2021-08-11	Unsuccessful

Free text

Release 9 — days 1–6 daily, dose 1

2021-08-11

Systemic reaction (other): Syncope after injection

Each entry is dated by the survey it was written in (the CDC re-sent the releases with survey dates in 2025); click a date to see that survey response. The CDC cut some text off at about 250 characters: symptoms in every release, and the other two fields in releases 9-12. Those entries are marked "cut off by CDC".

MedDRA terms by release

Field	Preferred term	2021-09	2023-04	2024-11
SRO	Immediate post-injection reaction	✓	·	✓
SRO	Syncope	✓	·	✓

✓ active code · ○ coded but marked inactive · blank = not in that release