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Timeline

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

2021-03-27
Dose 1 — Pfizer-BioNTech
2021-04-17
Dose 2 — Pfizer-BioNTech
2021-11-30
Dose 3 — Pfizer-BioNTech
2022-07-11
Dose 4 — Pfizer-BioNTech
2022-07-12
Registered in v-safe
2022-07-12
Health check-in — days 1–6 daily, dose 4
Feeling: Good · Site: Pain · Fatigue or tiredness

Adult check-in
2022-07-13
Survey response — days 1–6 daily, dose 4
MedDRA: Dizziness — Feeling: Good · Site: Pain · Fatigue or tiredness

Free text: dizziness

MedDRA releases: 2024-11 · check-in free text available
2022-07-14
Health check-in — days 1–6 daily, dose 4
Feeling: Good · Site: Pain · None

Adult check-in
2022-07-15
Health check-in — days 1–6 daily, dose 4
Feeling: Good · None

Adult check-in
2022-07-16
Health check-in — days 1–6 daily, dose 4
Feeling: Good · None

Adult check-in
2022-07-17
Health check-in — days 1–6 daily, dose 4
Feeling: Good · None

Adult check-in
2022-07-18
Health check-in — day 7, dose 4
Feeling: Good · None

Adult check-in
2022-07-25
Survey response — day 14, dose 4
MedDRA: Palpitations, Pre-existing disease — Feeling: Good

Free text: I noticed some heart palpitations, intermittently, for a few days. Now I have had these before in the past so I cannot confirm if they are related to the shot. Just noting it though.

MedDRA releases: 2024-11 · check-in free text available
2022-08-01
Health check-in — day 21, dose 4
Feeling: Good

Adult check-in
2022-08-08
Health check-in — day 28, dose 4
Feeling: Good

Adult check-in
2022-08-16
Health check-in — day 35, dose 4
Feeling: Good

Adult check-in
2022-08-22
Survey response — day 42, dose 4
MedDRA: Palpitations, Pre-existing disease — Feeling: Good

Free text: I have had intermittent heart palpitations. I cant say if its shot related as I have had these in the past. Previous shots did not do this that I recall. They are not frequent and I am wearing a monitor to track these. otherwise everything is normal.

MedDRA releases: 2024-11 · check-in free text available
2022-10-10
Health check-in — 3 months, dose 4
Feeling: Good

Adult check-in
2023-01-09
Health check-in — 6 months, dose 4
Feeling: Good

Adult check-in

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-03-27	Pfizer-BioNTech	No
2	2021-04-17	Pfizer-BioNTech	No
3	2021-11-30	Pfizer-BioNTech	No
4	2022-07-11	Pfizer-BioNTech	No

Free text

Release 12 — days 1–6 daily, dose 4

2022-07-13

Systemic reaction (other): dizziness

Release 12 — day 14, dose 4

2022-07-25

Symptoms: I noticed some heart palpitations, intermittently, for a few days. Now I have had these before in the past so I cannot confirm if they are related to the shot. Just noting it though.

Release 12 — day 42, dose 4

2022-08-22

Symptoms: I have had intermittent heart palpitations. I cant say if its shot related as I have had these in the past. Previous shots did not do this that I recall. They are not frequent and I am wearing a monitor to track these. otherwise everything is normal. cut off by CDC

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
SD	Palpitations	·	·	✓
SD	Pre-existing disease	·	·	✓
SRO	Dizziness	·	·	✓

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