KH2-35746-53465 · OpenVSafe

Timeline

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

2021-07-21
Dose 1 — Pfizer-BioNTech
2021-08-11
Dose 2 — Pfizer-BioNTech
2021-08-28
Registered in v-safe
2021-08-28
Health check-in — day 14, dose 2
Feeling: Good

Adult check-in
2021-09-01
Health check-in — day 21, dose 2
Feeling: Good

Adult check-in
2021-09-08
Health check-in — day 28, dose 2
Feeling: Good

Adult check-in
2021-09-17
Survey response — day 35, dose 2
MedDRA: Dizziness — Feeling: Fair · Be unable to do your normal daily activities, Get care from a doctor or other healthcare professional · Outpatient clinic or urgent care clinic visit

Free text: Dizziness

MedDRA releases: 2024-11 · check-in free text available
2021-09-17
Report sent to call center — day 35, dose 2
Be unable to do your normal daily activities · Get care from a doctor or other healthcare professional

1 call case(s)
2021-09-20
Call 1 — Could Not Reach Participant
2021-09-23
Call successful
Not applicable (accidental reporting or does not believe symptoms are related to vaccine)
2021-09-24
Health check-in — day 42, dose 2
Feeling: Good

Adult check-in
2021-11-11
Health check-in — 3 months, dose 2
Feeling: Good

Adult check-in

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-07-21	Pfizer-BioNTech	No
2	2021-08-11	Pfizer-BioNTech	No

Call center

1 call center case

1 successful

See the call center timeline

Free text

Release 9 — day 35, dose 2

2021-09-17

Symptoms: Dizziness

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	Dizziness	·	·	✓

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