7JV-26473-14177

VAERS ID	Confidence	Score	Runner-up	Shared symptoms	Dose	State	VAERS vaccinated / onset / received	Call case
1102512 (opens in a new window)	high	8 / 11	3	0 of 5 VAERS symptoms	same dose (1)	TX matches	2021-03-09 / 2021-03-09 / 2021-03-15 received 6 days after the last call	case 310607

Timeline

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

2021-03-09
Registered in v-safe
2021-03-09
Dose 1 — Pfizer-BioNTech
2021-03-09
Survey response — day 0, dose 1
MedDRA: Emergency care, Immediate post-injection reaction, Pain in extremity, Pre-existing disease, Pregnancy — Feeling: Fair · Get care from a doctor or other healthcare professional · Emergency room or emergency department visit

Free text: I have factor V Leiden and have a history of a superficial clot- about 30 minutes after my vaccine I noticed my lower left leg was hurting. I went to the ER later and theres no clot, but I have to follow up in 7-10 days. Im also 8 weeks pregnant with my second child and never had leg pain in that pregnancy.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-09
Report sent to call center — day 0, dose 1
Get care from a doctor or other healthcare professional

1 call case(s)
2021-03-11
Survey response — days 1–6 daily, dose 1
MedDRA: Pre-existing disease, Superficial vein thrombosis — Feeling: Good · Get care from a doctor or other healthcare professional · Emergency room or emergency department visit

Free text: I have developed a superficial blood clot where I had one previously

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-11
Report sent to call center — days 1–6 daily, dose 1
Get care from a doctor or other healthcare professional

1 call case(s)
2021-03-13
Health check-in — days 1–6 daily, dose 1
Feeling: Good · None

Adult check-in
2021-03-15
Call successful
Completed over the phone
2021-09-09
Health check-in — 6 months, dose 1
Feeling: Good

Adult check-in

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-03-09	Pfizer-BioNTech

Call center

Reported	Outcome	VAERS-related outcome
2021-03-09	Successful	Completed over the phone
2021-03-11	Successful 2021-03-15	Completed over the phone

Free text

Release 5 — day 0, dose 1

2021-03-09

Systemic reaction (other): I have factor V Leiden and have a history of a superficial clot- about 30 minutes after my vaccine I noticed my lower left leg was hurting. I went to the ER later and theres no clot, but I have to follow up in 7-10 days. Im also 8 weeks pregnant with my second child and never had leg pain in that pregnancy.

Release 5 — days 1–6 daily, dose 1

2021-03-11

Systemic reaction (other): I have developed a superficial blood clot where I had one previously

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	Emergency care	✓	✓	✓
SRO	Immediate post-injection reaction	✓	✓	✓
SRO	Pain in extremity	✓	✓	✓
SRO	Pre-existing disease	✓	✓	✓
SRO	Pregnancy	✓	✓	✓
SRO	Superficial vein thrombosis	✓	✓	✓

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

Possible VAERS report