YXC-18992-12204 · OpenVSafe

Timeline

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

2021-02-26
Registered in v-safe
2021-02-27
Dose 1 — Pfizer-BioNTech
2021-02-27
Health check-in — day 0, dose 1
Feeling: Good · None

Adult check-in
2021-02-28
Health check-in — days 1–6 daily, dose 1
Feeling: Fair · Site: Pain · Headache, Fatigue or tiredness

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

Adult check-in
2021-03-02
Survey response — days 1–6 daily, dose 1
MedDRA: Dizziness — Feeling: Good

Free text: A little temporary dizziness

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-03
Health check-in — days 1–6 daily, dose 1
Feeling: Good · None

Adult check-in
2021-03-04
Health check-in — days 1–6 daily, dose 1
Feeling: Good · None

Adult check-in
2021-03-05
Health check-in — days 1–6 daily, dose 1
Feeling: Good · None

Adult check-in
2021-03-06
Health check-in — day 7, dose 1
Feeling: Good · None

Adult check-in
2021-03-13
Health check-in — day 14, dose 1
Feeling: Good

Adult check-in
2021-03-20
Dose 2 — Pfizer-BioNTech
2021-03-20
Health check-in — day 0, dose 2
Feeling: Good · None

Adult check-in
2021-03-21
Health check-in — days 1–6 daily, dose 2
Feeling: Fair · Site: Pain · Headache, Joint pains, Fatigue or tiredness · Be unable to do your normal daily activities

Adult check-in
2021-03-22
Survey response — days 1–6 daily, dose 2
MedDRA: Lymph node pain, Lymphadenopathy — Feeling: Fair · Site: Pain · Muscle or body aches

Free text: Painful swollen lymph nodes in armpit and neck on side of shot

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-24
Survey response — days 1–6 daily, dose 2
MedDRA: Lymph node pain, Migraine, Pre-existing disease — Feeling: Good · Headache, Muscle or body aches · Be unable to do your normal daily activities

Free text: Still have painful lump under arm (probably lymph node), spread a bit to front of shoulder. I get migraines, so unclear if due to shot.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-25
Survey response — days 1–6 daily, dose 2
MedDRA: Dizziness — Feeling: Good

Free text: Dizziness

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-26
Survey response — days 1–6 daily, dose 2
MedDRA: Dizziness, Vertigo — Feeling: Fair · Headache · Be unable to do your normal daily activities, Get care from a doctor or other healthcare professional · Telehealth, virtual health, or email health consultation

Free text: Dizziness/vertigo. Have never had anything like this for this long.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-26
Report sent to call center — days 1–6 daily, dose 2
Be unable to do your normal daily activities · Get care from a doctor or other healthcare professional

1 call case(s)
2021-03-27
Survey response — day 7, dose 2
MedDRA: Dizziness, Tinnitus — Feeling: Good · Headache

Free text: Dizziness not entirely gone, down tinnitus when turning head

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-03
Health check-in — day 14, dose 2
Feeling: Good

Adult check-in
2021-04-10
Health check-in — day 21, dose 2
Feeling: Good

Adult check-in
2021-04-18
Survey response — day 28, dose 2
MedDRA: Tinnitus, Unevaluable event — Feeling: Good · Get care from a doctor or other healthcare professional

Free text: Symptoms: Mild tinnitus getting bothersome. Have referral for ENT. · Healthcare visit (other): Still making appointment

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-18
Report sent to call center — day 28, dose 2
Get care from a doctor or other healthcare professional

1 call case(s)
2021-04-24
Health check-in — day 35, dose 2
Feeling: Fair

Adult check-in
2021-05-01
Health check-in — day 42, dose 2
Feeling: Fair

Adult check-in
2021-06-21
Health check-in — 3 months, dose 2
Feeling: Good

Adult check-in
2021-09-18
Health check-in — 6 months, dose 2
Feeling: Fair

Adult check-in
2022-02-25
Call successful
Participant prefers to complete VAERS report online

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-02-27	Pfizer-BioNTech
2	2021-03-20	Pfizer-BioNTech

Call center

Reported	Outcome	VAERS-related outcome
2021-03-26	Successful 2022-02-25	Participant prefers to complete VAERS report online
2021-04-18	Successful	Participant prefers to complete VAERS report online

Free text

Release 4 — days 1–6 daily, dose 1

2021-03-02

Systemic reaction (other): A little temporary dizziness

Release 6 — days 1–6 daily, dose 2

2021-03-22

Systemic reaction (other): Painful swollen lymph nodes in armpit and neck on side of shot

2021-03-24

Systemic reaction (other): Still have painful lump under arm (probably lymph node), spread a bit to front of shoulder. I get migraines, so unclear if due to shot.

2021-03-25

Systemic reaction (other): Dizziness

2021-03-26

Systemic reaction (other): Dizziness/vertigo. Have never had anything like this for this long.

Release 6 — day 7, dose 2

2021-03-27

Systemic reaction (other): Dizziness not entirely gone, down tinnitus when turning head

Release 7 — day 28, dose 2

2021-04-18

Symptoms: Mild tinnitus getting bothersome. Have referral for ENT.

Healthcare visit (other): Still making appointment

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
HCVO	Unevaluable event	✓	✓	✓
SD	Tinnitus	✓	✓	✓
SRO	Dizziness	✓	✓	✓
SRO	Lymph node pain	✓	✓	✓
SRO	Lymphadenopathy	✓	✓	✓
SRO	Migraine	✓	✓	○
SRO	Pre-existing disease	·	·	✓
SRO	Tinnitus	✓	✓	✓
SRO	Vertigo	✓	✓	✓

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