TDD-26593-23783 · OpenVSafe

Timeline

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

2021-03-09
Dose 1 — Pfizer-BioNTech
2021-04-06
Registered in v-safe
2021-04-06
Dose 2 — Pfizer-BioNTech
2021-04-06
Survey response — day 0, dose 2
MedDRA: Hypoacusis, Tinnitus — Feeling: Good · Site: Pain

Free text: Tinnitus/muffled hearing in one ear

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-07
Survey response — days 1–6 daily, dose 2
MedDRA: Suppressed lactation — Feeling: Fair · Site: Pain · Fatigue or tiredness, Nausea, Diarrhea

Free text: Drop in milk supply

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-08
Survey response — days 1–6 daily, dose 2
MedDRA: Suppressed lactation — Feeling: Poor · Site: Pain · Fever · Headache, Muscle or body aches, Fatigue or tiredness, Nausea, Diarrhea

Free text: Reduced breastmilk supply

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-09
Health check-in — days 1–6 daily, dose 2
Feeling: Good · Headache, Muscle or body aches, Fatigue or tiredness

Adult check-in
2021-04-10
Health check-in — days 1–6 daily, dose 2
Feeling: Good · Headache, Fatigue or tiredness

Adult check-in
2021-04-12
Health check-in — days 1–6 daily, dose 2
Feeling: Fair · Headache, Fatigue or tiredness

Adult check-in
2021-04-13
Health check-in — day 7, dose 2
Feeling: Good · None

Adult check-in
2021-04-22
Health check-in — day 14, dose 2
Feeling: Good

Adult check-in
2021-04-27
Health check-in — day 21, dose 2
Feeling: Good

Adult check-in
2021-05-04
Health check-in — day 28, dose 2
Feeling: Good

Adult check-in
2021-05-11
Health check-in — day 35, dose 2
Feeling: Good

Adult check-in
2021-05-18
Health check-in — day 42, dose 2
Feeling: Good

Adult check-in
2021-07-06
Health check-in — 3 months, dose 2
Feeling: Good

Adult check-in
2021-10-08
Dose 3 — Pfizer-BioNTech
Co-administered: Flu
2021-10-08
Survey response — 6 months, dose 2
MedDRA: Pregnancy — Feeling: Good · Get care from a doctor or other healthcare professional · Outpatient clinic or urgent care clinic visit

Free text: Pregnancy

MedDRA releases: 2024-11 · check-in free text available
2021-10-08
Report sent to call center — 6 months, dose 2
Get care from a doctor or other healthcare professional

Outpatient clinic or urgent care clinic visit · 1 call case(s)
2021-10-15
Call 1 — Could Not Reach Participant
2021-10-20
Call 2 — Left Voicemail
2022-04-06
Health check-in — 12 months, dose 2
Feeling: Good

Adult check-in
2022-07-16
Dose 4 — Pfizer-BioNTech
2022-10-15
Health check-in — 3 months, dose 4
Feeling: Good

Adult check-in

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-03-09	Pfizer-BioNTech
2	2021-04-06	Pfizer-BioNTech
3	2021-10-08	Pfizer-BioNTech	Flu
4	2022-07-16	Pfizer-BioNTech	No

Call center

1 call center case

1 unsuccessful

See the call center timeline

Free text

Release 7 — day 0, dose 2

2021-04-06

Systemic reaction (other): Tinnitus/muffled hearing in one ear

Release 7 — days 1–6 daily, dose 2

2021-04-07

Systemic reaction (other): Drop in milk supply

2021-04-08

Systemic reaction (other): Reduced breastmilk supply

Release 10 — 6 months, dose 2

2021-10-08

Symptoms: Pregnancy

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	Pregnancy	·	·	✓
SRO	Hypoacusis	✓	✓	✓
SRO	Suppressed lactation	✓	✓	✓
SRO	Tinnitus	✓	✓	✓

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