K99-12043-60903 · OpenVSafe

Timeline

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

2021-05-15
Registered in v-safe
2021-05-15
Dose 1 — Pfizer-BioNTech
2021-05-16
Health check-in — days 1–6 daily, dose 1
Feeling: Good · Site: Pain · None

Adult check-in
2021-05-17
Health check-in — days 1–6 daily, dose 1
Feeling: Good · Site: Pain · None

Adult check-in
2021-05-18
Health check-in — days 1–6 daily, dose 1
Feeling: Good · None

Adult check-in
2021-05-19
Survey response — days 1–6 daily, dose 1
MedDRA: Ear discomfort, Hypoacusis — Feeling: Good

Free text: Muffled hearing/ clogged ears

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-05-21
Survey response — days 1–6 daily, dose 1
MedDRA: Ear discomfort, Hypoacusis — Feeling: Good

Free text: Clogged ears. Muffled hearing.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-05-15	Pfizer-BioNTech

Free text

Release 8 — days 1–6 daily, dose 1

2021-05-19

Systemic reaction (other): Muffled hearing/ clogged ears

2021-05-21

Systemic reaction (other): Clogged ears. Muffled hearing.

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	Ear discomfort	✓	✓	✓
SRO	Hypoacusis	✓	✓	✓

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