2AU-25612-38456 · OpenVSafe

Timeline

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

2021-04-01
Registered in v-safe
2021-04-01
Dose 1 — Pfizer-BioNTech
2021-04-03
Survey response — days 1–6 daily, dose 1
MedDRA: Injection site reaction, Muscle twitching — Feeling: Good

Free text: Twitching at injection site.

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

Adult check-in
2021-04-08
Health check-in — day 7, dose 1
Feeling: Good · None

Adult check-in
2021-04-22
Dose 2 — Pfizer-BioNTech
2021-04-24
Health check-in — days 1–6 daily, dose 2
Feeling: Good · Site: Redness · Headache

Adult check-in
2021-07-22
Health check-in — 3 months, dose 2
Feeling: Good

Adult check-in
2022-04-24
Health check-in — 12 months, dose 2
Feeling: Good

Adult check-in

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-04-01	Pfizer-BioNTech
2	2021-04-22	Pfizer-BioNTech

Free text

Release 6 — days 1–6 daily, dose 1

2021-04-03

Systemic reaction (other): Twitching at injection site.

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
SRO	Injection site reaction	✓	✓	✓
SRO	Muscle twitching	✓	✓	✓

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