2RN-28134-89184

4 vaccinations 10 coded responses 23 check-ins 10 free-text entries 2 call cases

Sex: Male
Age at first dose: 61-65
ZIP prefix: 020 / MA
Registered: 2021-02-24

Relationship: Self
Race: White
Ethnicity: Not Hispanic or Latino

Possible VAERS report

VAERS ID	Confidence	Score	Runner-up	Shared symptoms	Dose	State	VAERS vaccinated / onset / received	Call case
1632701 (opens in a new window)	high	10 / 11	-3	1 of 4 VAERS symptoms	same dose (1)	MA matches	2021-02-19 / 2021-02-22 / 2021-08-25 received 182 days after the last call	case 248468

From the VAERS matching of call center cases (loader/vaers_match_*). Only the best match is shown, and only if it scores 8 or more out of 11. The score adds up timing (VAERS received soon after the call center contact), dose and shared symptoms; state only breaks ties. Confidence is high when the score is 8+ and at least 3 points ahead of the runner-up, medium when 5+ and 2 ahead, otherwise low. A match is a likely link, not a confirmed one.

Timeline

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

2021-02-19
Dose 1 — Pfizer-BioNTech
2021-02-24
Registered in v-safe
2021-02-24
Survey response — days 1–6 daily, dose 1
MedDRA: Atrial fibrillation, Office visit, Palpitations — Feeling: Fair · Get care from a doctor or other healthcare professional · Outpatient clinic or urgent care clinic visit

Free text: Systemic reaction (other): Palpitations · Healthcare visit (other): Having atrial fibrillation, saw my primary care Dr

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-02-24
Report sent to call center — days 1–6 daily, dose 1
Get care from a doctor or other healthcare professional

1 call case(s)
2021-02-25
Survey response — days 1–6 daily, dose 1
MedDRA: Palpitations, Pulse abnormal — Feeling: Fair

Free text: Heart palpitations from the last 2 days have stopped but I still have an elevated pulse rate

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-02-26
Survey response — day 7, dose 1
MedDRA: Palpitations — Feeling: Good

Free text: Heart palpitations that arose after my Pfizer vaccine shot have abated, responded well to the atanolol I was prescribed.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-05
Health check-in — day 14, dose 1
Feeling: Fair

Adult check-in
2021-03-14
Survey response — day 21, dose 1
MedDRA: Atrial fibrillation, Office visit — Feeling: Fair · Get care from a doctor or other healthcare professional

Free text: Symptoms: Atrial fibrillation continues · Healthcare visit (other): Visit to cardiologist office

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-14
Report sent to call center — day 21, dose 1
Get care from a doctor or other healthcare professional

1 call case(s)
2021-03-19
Dose 2 — Pfizer-BioNTech
2021-03-19
Survey response — day 0, dose 2
MedDRA: Atrial fibrillation — Feeling: Good

Free text: Still having atrial fibrillation after following 1st shot

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-21
Survey response — days 1–6 daily, dose 2
MedDRA: Atrial fibrillation, Reaction to previous exposure to any vaccine — Feeling: Good

Free text: Still having atrial fibrillation that started after 1st shot

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-22
Survey response — days 1–6 daily, dose 2
MedDRA: Atrial fibrillation — Feeling: Good

Free text: Still experiencing atrial fibrillation which started after first dose on 2/19/21

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-24
Survey response — days 1–6 daily, dose 2
MedDRA: Atrial fibrillation — Feeling: Good

Free text: Still experiencing atrial fibrillation which began 3 days after first dose of Pfizer vaccine on 2/19

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-25
Survey response — days 1–6 daily, dose 2
MedDRA: Atrial fibrillation — Feeling: Good

Free text: Still experiencing atrial fibrillation that began after my first vaccine shot on by 2/19

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-28
Survey response — day 7, dose 2
MedDRA: Atrial fibrillation — Feeling: Good

Free text: Still experiencing atrial fibrillation following 1st dose of Pfizer vaccine on Feb 19

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-02
Health check-in — day 14, dose 2
Feeling: Fair

Adult check-in
2021-04-18
Health check-in — day 28, dose 2
Feeling: Fair

Adult check-in
2021-04-23
Health check-in — day 35, dose 2
Feeling: Fair

Adult check-in
2021-05-01
Health check-in — day 42, dose 2
Feeling: Fair

Adult check-in
2021-08-25
Call successful
Completed over the phone
2021-09-16
Dose 3 — Pfizer-BioNTech
2021-10-02
Health check-in — day 14, dose 3
Feeling: Good

Adult check-in
2021-10-07
Health check-in — day 21, dose 3
Feeling: Good

Adult check-in
2021-10-14
Health check-in — day 28, dose 3
Feeling: Good

Adult check-in
2021-10-21
Health check-in — day 35, dose 3
Feeling: Good

Adult check-in
2021-10-28
Health check-in — day 42, dose 3
Feeling: Good

Adult check-in
2021-12-16
Health check-in — 3 months, dose 3
Feeling: Good

Adult check-in
2022-02-18
Dose 4 — Pfizer-BioNTech
2022-03-17
Health check-in — 6 months, dose 3
Feeling: Good

Adult check-in
2022-03-17
Health check-in — day 21, dose 4
Feeling: Good

Adult check-in

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-02-19	Pfizer-BioNTech
2	2021-03-19	Pfizer-BioNTech
3	2021-09-16	Pfizer-BioNTech	No
4	2022-02-18	Pfizer-BioNTech	No

Call center

2 call center cases

2 successful

VAERS report filed, before or during a call: 2

See the call center timeline

Free text

Release 4 — days 1–6 daily, dose 1

2021-02-24

Systemic reaction (other): Palpitations

Healthcare visit (other): Having atrial fibrillation, saw my primary care Dr

2021-02-25

Systemic reaction (other): Heart palpitations from the last 2 days have stopped but I still have an elevated pulse rate

Release 4 — day 7, dose 1

2021-02-26

Systemic reaction (other): Heart palpitations that arose after my Pfizer vaccine shot have abated, responded well to the atanolol I was prescribed.

Release 5 — day 21, dose 1

2021-03-14

Symptoms: Atrial fibrillation continues

Healthcare visit (other): Visit to cardiologist office

Release 5 — day 0, dose 2

2021-03-19

Systemic reaction (other): Still having atrial fibrillation after following 1st shot

Release 6 — days 1–6 daily, dose 2

2021-03-21

Systemic reaction (other): Still having atrial fibrillation that started after 1st shot

2021-03-22

Systemic reaction (other): Still experiencing atrial fibrillation which started after first dose on 2/19/21

2021-03-24

Systemic reaction (other): Still experiencing atrial fibrillation which began 3 days after first dose of Pfizer vaccine on 2/19

2021-03-25

Systemic reaction (other): Still experiencing atrial fibrillation that began after my first vaccine shot on by 2/19

Release 6 — day 7, dose 2

2021-03-28

Systemic reaction (other): Still experiencing atrial fibrillation following 1st dose of Pfizer vaccine on Feb 19

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
HCVO	Atrial fibrillation	✓	✓	✓
HCVO	Office visit	✓	✓	✓
SD	Atrial fibrillation	✓	✓	✓
SRO	Atrial fibrillation	✓	✓	✓
SRO	Palpitations	✓	✓	✓
SRO	Pulse abnormal	✓	✓	✓
SRO	Reaction to previous exposure to any vaccine	✓	✓	✓

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