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Timeline

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

2021-03-24
Dose 1 — Pfizer-BioNTech
2021-04-21
Dose 2 — Pfizer-BioNTech
2021-05-14
Registered in v-safe
2021-05-14
Survey response — day 21, dose 2
MedDRA: Chills, Fatigue, Feeling cold, Feeling hot — Feeling: Fair

Free text: This is 1st check in & since I had my vaccine I am very tired and get chills on & off. I seem to not be able to get warm then I get hot but not feverish. The tiredness is every day & I can't snap out of it. I take Vit D every other day & B-12 daily.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-05-21
Survey response — day 28, dose 2
MedDRA: Dizziness, Palpitations — Feeling: Fair

Free text: Yesterday I had heart palpitations & a rush went through me. I couldnt see for a split second. I felt like I was about to pass out. I was also a little dizzy earlier & I felt I was about to pass out. No rush through my head though. Might call doc.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-05-26
Health check-in — day 35, dose 2
Feeling: Fair

Adult check-in
2021-06-04
Health check-in — day 42, dose 2
Feeling: Fair

Adult check-in
2021-07-23
Health check-in — 3 months, dose 2
Feeling: Good

Adult check-in
2021-09-10
Dose 3 — Pfizer-BioNTech
2021-10-21
Health check-in — day 35, dose 3
Feeling: Fair

Adult check-in
2021-10-24
Health check-in — day 42, dose 3
Feeling: Good

Adult check-in
2022-03-11
Survey response — 6 months, dose 3
MedDRA: COVID-19, Chills, Fatigue, Pyrexia, Respiratory tract congestion, Unevaluable event — Feeling: Fair · Be unable to work or attend school, Be unable to do your normal daily activities, Get care from a doctor or other healthcare professional

Free text: Symptoms: I actually got covid. Fever, chills, fatigue, still experiencing congestion. · Healthcare visit (other): I tried to get antivirals but my doc didn't call them in.

MedDRA releases: 2024-11 · check-in free text available
2022-03-11
Report sent to call center — 6 months, dose 3
Be unable to work or attend school · Be unable to do your normal daily activities · Get care from a doctor or other healthcare pr

1 call case(s)
2022-03-14
Call successful
Not applicable (accidental reporting or does not believe symptoms are related to vaccine)

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-03-24	Pfizer-BioNTech
2	2021-04-21	Pfizer-BioNTech
3	2021-09-10	Pfizer-BioNTech	No

Call center

1 call center case

1 successful

See the call center timeline

Free text

Release 8 — day 21, dose 2

2021-05-14

Symptoms: This is 1st check in & since I had my vaccine I am very tired and get chills on & off. I seem to not be able to get warm then I get hot but not feverish. The tiredness is every day & I can't snap out of it. I take Vit D every other day & B-12 daily. cut off by CDC

Release 8 — day 28, dose 2

2021-05-21

Symptoms: Yesterday I had heart palpitations & a rush went through me. I couldnt see for a split second. I felt like I was about to pass out. I was also a little dizzy earlier & I felt I was about to pass out. No rush through my head though. Might call doc.

Release 11 — 6 months, dose 3

2022-03-11

Symptoms: I actually got covid. Fever, chills, fatigue, still experiencing congestion.

Healthcare visit (other): I tried to get antivirals but my doc didn't call them in.

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	Unevaluable event	·	·	✓
SD	Chills	✓	✓	✓
SD	COVID-19	·	·	✓
SD	Dizziness	✓	✓	✓
SD	Fatigue	✓	✓	✓
SD	Feeling cold	✓	✓	✓
SD	Feeling hot	✓	✓	✓
SD	Palpitations	✓	✓	✓
SD	Pyrexia	·	·	✓
SD	Respiratory tract congestion	·	·	✓

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