YZT-18958-79092 · OpenVSafe

Timeline

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

2021-01-29
Dose 1 — Moderna
2021-02-26
Dose 2 — Moderna
2021-02-27
Registered in v-safe
2021-02-27
Survey response — days 1–6 daily, dose 2
MedDRA: Dizziness — Feeling: Fair · Site: Pain · Muscle or body aches, Fatigue or tiredness

Free text: Dizziness

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-02-28
Health check-in — days 1–6 daily, dose 2
Feeling: Good · Site: Pain · None

Adult check-in
2021-03-01
Health check-in — days 1–6 daily, dose 2
Feeling: Good · None

Adult check-in
2021-03-03
Health check-in — days 1–6 daily, dose 2
Feeling: Good · None

Adult check-in
2021-08-27
Health check-in — 6 months, dose 2
Feeling: Good

Adult check-in
2022-02-27
Survey response — 12 months, dose 2
MedDRA: Dizziness, Loss of consciousness, Syncope — Feeling: Good · Be unable to work or attend school, Be unable to do your normal daily activities

Free text: I had a bad reaction to my booster shot. I got it the same time as my flu shot, and it made me feel very light headed- I couldn't wait more than a step or two without collapsing because I was passing out.

MedDRA releases: 2024-11 · check-in free text available

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-01-29	Moderna
2	2021-02-26	Moderna

Free text

Release 4 — days 1–6 daily, dose 2

2021-02-27

Systemic reaction (other): Dizziness

Release 11 — 12 months, dose 2

2022-02-27

Symptoms: I had a bad reaction to my booster shot. I got it the same time as my flu shot, and it made me feel very light headed- I couldn't wait more than a step or two without collapsing because I was passing out.

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	·	·	✓
SD	Loss of consciousness	·	·	✓
SD	Syncope	·	·	✓
SRO	Dizziness	✓	✓	✓

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