6M2-27069-36845 · OpenVSafe

Timeline

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

2021-04-14
Dose 1 — Pfizer-BioNTech
2021-04-15
Registered in v-safe
2021-04-15
Health check-in — days 1–6 daily, dose 1
Feeling: Poor · Site: Pain · Fever · Chills, Headache, Joint pains, Muscle or body aches, Fatigue or tiredness · Be unable to work, Be unable to do your normal daily activities

Adult check-in
2021-04-16
Health check-in — days 1–6 daily, dose 1
Feeling: Fair · Site: Pain · Chills, Headache, Joint pains, Fatigue or tiredness · Be unable to work

Adult check-in
2021-04-17
Survey response — days 1–6 daily, dose 1
MedDRA: Unevaluable event — Feeling: Good · Site: Pain

Free text: Just thought I would bring to your attention, that I have an identical twin sister who experienced the exact symptoms that I did for two days after her first and second shot. The only difference is that I had Covid in January and she did not. apparently some thing in our twin genetic make up that affected us both in the same way. We are in our 65th year and for the most part in very good health with no underlying conditions

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-19
Health check-in — days 1–6 daily, dose 1
Feeling: Good · Headache

Adult check-in
2021-04-20
Health check-in — days 1–6 daily, dose 1
Feeling: Good · None

Adult check-in
2021-04-21
Health check-in — day 7, dose 1
Feeling: Good · None

Adult check-in
2021-04-28
Health check-in — day 14, dose 1
Feeling: Good

Adult check-in
2021-05-06
Health check-in — day 21, dose 1
Feeling: Good

Adult check-in
2021-05-07
Dose 2 — Pfizer-BioNTech
2021-05-12
Survey response — days 1–6 daily, dose 2
MedDRA: Chills, Fatigue, Pain, Pyrexia — Feeling: Good

Free text: Within 10 hrs of receiving Vaccine, I had fever chills extreme fatigue and achiness

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-05-14
Health check-in — day 7, dose 2
Feeling: Good · Joint pains

Adult check-in
2021-05-21
Health check-in — day 14, dose 2
Feeling: Good

Adult check-in
2021-05-28
Health check-in — day 21, dose 2
Feeling: Good

Adult check-in
2021-06-04
Health check-in — day 28, dose 2
Feeling: Good

Adult check-in
2021-06-11
Health check-in — day 35, dose 2
Feeling: Good

Adult check-in
2021-06-18
Health check-in — day 42, dose 2
Feeling: Good

Adult check-in
2021-08-08
Health check-in — 3 months, dose 2
Feeling: Good

Adult check-in
2021-11-05
Health check-in — 6 months, dose 2
Feeling: Good

Adult check-in

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-04-14	Pfizer-BioNTech
2	2021-05-07	Pfizer-BioNTech

Free text

Release 7 — days 1–6 daily, dose 1

2021-04-17

Systemic reaction (other): Just thought I would bring to your attention, that I have an identical twin sister who experienced the exact symptoms that I did for two days after her first and second shot. The only difference is that I had Covid in January and she did not. apparently some thing in our twin genetic make up that affected us both in the same way. We are in our 65th year and for the most part in very good health with no underlying conditions

Release 8 — days 1–6 daily, dose 2

2021-05-12

Systemic reaction (other): Within 10 hrs of receiving Vaccine, I had fever chills extreme fatigue and achiness

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	Chills	✓	✓	✓
SRO	Fatigue	✓	✓	✓
SRO	Pain	✓	✓	✓
SRO	Pyrexia	✓	✓	✓
SRO	Unevaluable event	✓	✓	✓

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