YWG-21513-49539 · OpenVSafe

Timeline

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

2021-02-07
Dose 1 — Pfizer-BioNTech
2021-02-28
Registered in v-safe
2021-02-28
Dose 2 — Pfizer-BioNTech
2021-03-01
Survey response — days 1–6 daily, dose 2
MedDRA: Headache — Feeling: Poor · Site: Pain · Chills, Headache, Joint pains, Fatigue or tiredness, Nausea · Be unable to do your normal daily activities

Free text: Bad headache

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-02
Survey response — days 1–6 daily, dose 2
MedDRA: Chills, Headache, Self-medication — Feeling: Poor · Site: Pain · Headache, Muscle or body aches, Fatigue or tiredness, Nausea, Abdominal pain · Be unable to do your normal daily activities

Free text: This vaccination totally kicked my butt the headache I got the first night in the chills felt like somebody was hitting me over the head with an ax... Horrible had to take Advil no hotlines would help me all I listened to were recordings

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-03
Survey response — days 1–6 daily, dose 2
MedDRA: Chills, Fatigue, Pain — Feeling: Poor · Site: Pain · Chills, Muscle or body aches, Fatigue or tiredness · Be unable to do your normal daily activities

Free text: Had chills last night around 3:00 a.m. although I didn't register a fever I was freezing with chills for about a half hour today I just feel exhausted and some aches and pains when I try to do anything

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-04
Health check-in — days 1–6 daily, dose 2
Feeling: Fair · Fatigue or tiredness

Adult check-in
2021-03-05
Health check-in — days 1–6 daily, dose 2
Feeling: Good · None

Adult check-in
2021-03-06
Health check-in — days 1–6 daily, dose 2
Feeling: Good · None

Adult check-in
2021-03-09
Survey response — day 7, dose 2
MedDRA: Back pain — Feeling: Good

Free text: Some middle back pain don't think it's associated

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-16
Health check-in — day 14, dose 2
Feeling: Good

Adult check-in
2021-03-22
Health check-in — day 21, dose 2
Feeling: Good

Adult check-in
2021-04-09
Health check-in — day 35, dose 2
Feeling: Good

Adult check-in
2021-04-11
Health check-in — day 42, dose 2
Feeling: Good

Adult check-in
2021-08-31
Health check-in — 6 months, dose 2
Feeling: Good

Adult check-in

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-02-07	Pfizer-BioNTech
2	2021-02-28	Pfizer-BioNTech

Free text

Release 4 — days 1–6 daily, dose 2

2021-03-01

Systemic reaction (other): Bad headache

2021-03-02

Systemic reaction (other): This vaccination totally kicked my butt the headache I got the first night in the chills felt like somebody was hitting me over the head with an ax... Horrible had to take Advil no hotlines would help me all I listened to were recordings

Release 5 — days 1–6 daily, dose 2

2021-03-03

Systemic reaction (other): Had chills last night around 3:00 a.m. although I didn't register a fever I was freezing with chills for about a half hour today I just feel exhausted and some aches and pains when I try to do anything

Release 5 — day 7, dose 2

2021-03-09

Systemic reaction (other): Some middle back pain don't think it's associated

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	Back pain	✓	✓	✓
SRO	Chills	✓	✓	✓
SRO	Fatigue	✓	✓	✓
SRO	Headache	✓	✓	✓
SRO	Pain	✓	✓	✓
SRO	Self-medication	✓	✓	✓

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