YCX-28991-73007 · 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
2021-02-26
Dose 1 — Pfizer-BioNTech
2021-02-26
Survey response — day 0, dose 1
MedDRA: Feeling hot — Feeling: Fair · Fever · Chills, Headache, Muscle or body aches, Fatigue or tiredness · Be unable to work

Free text: Felt a little feverish

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-02-27
Survey response — days 1–6 daily, dose 1
MedDRA: Abdominal discomfort, Chills, Feeling cold, Hyperhidrosis, Influenza like illness, Pyrexia — Feeling: Fair · Site: Pain · Fever · Chills, Headache, Muscle or body aches, Fatigue or tiredness, Nausea

Free text: Felt sweaty then cold over night. Guess that is feverish then chills. Stomach uneasiness overnight. Felt like I had the flu a little.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-02-28
Survey response — days 1–6 daily, dose 1
MedDRA: Chills, Pyrexia — Feeling: Good · Fever · Chills, Headache, Joint pains, Fatigue or tiredness

Free text: Somewhat feverish then some chills but not like the last 2 days. Still tired a good bit. e previous 2 days.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-01
Survey response — days 1–6 daily, dose 1
MedDRA: Fatigue, Hyperhidrosis, Pyrexia — Feeling: Good · Fever · Headache, Fatigue or tiredness

Free text: Still slightly sweaty or feverish several times. Still tired more than normal.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-02
Survey response — days 1–6 daily, dose 1
MedDRA: Fatigue — Feeling: Good · Fatigue or tiredness

Free text: Still very tired at times. Went back to work yesterday, still more tired than normal.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-03
Survey response — days 1–6 daily, dose 1
MedDRA: Hunger, Nausea — Feeling: Good · Fatigue or tiredness, Nausea

Free text: Can not tell if it is nausea or hunger. Stomach still does not feel 100% even after I have eaten???

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-05
Survey response — day 7, dose 1
MedDRA: Fatigue — Feeling: Good · Fatigue or tiredness

Free text: Feeling much better still a little tired.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-12
Health check-in — day 14, dose 1
Feeling: Good

Adult check-in
2021-05-28
Health check-in — 3 months, dose 1
Feeling: Good

Adult check-in
2021-08-28
Health check-in — 6 months, dose 1
Feeling: Good

Adult check-in
2022-02-28
Health check-in — 12 months, dose 1
Feeling: Good

Adult check-in

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-02-26	Pfizer-BioNTech

Free text

Release 4 — day 0, dose 1

2021-02-26

Systemic reaction (other): Felt a little feverish

Release 4 — days 1–6 daily, dose 1

2021-02-27

Systemic reaction (other): Felt sweaty then cold over night. Guess that is feverish then chills. Stomach uneasiness overnight. Felt like I had the flu a little.

2021-02-28

Systemic reaction (other): Somewhat feverish then some chills but not like the last 2 days. Still tired a good bit. e previous 2 days.

2021-03-01

Systemic reaction (other): Still slightly sweaty or feverish several times. Still tired more than normal.

2021-03-02

Systemic reaction (other): Still very tired at times. Went back to work yesterday, still more tired than normal.

Release 5 — days 1–6 daily, dose 1

2021-03-03

Systemic reaction (other): Can not tell if it is nausea or hunger. Stomach still does not feel 100% even after I have eaten???

Release 5 — day 7, dose 1

2021-03-05

Systemic reaction (other): Feeling much better still a little tired.

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	Abdominal discomfort	✓	✓	✓
SRO	Chills	✓	✓	✓
SRO	Fatigue	✓	✓	✓
SRO	Feeling cold	✓	✓	✓
SRO	Feeling hot	✓	✓	✓
SRO	Hunger	✓	✓	✓
SRO	Hyperhidrosis	✓	✓	✓
SRO	Influenza like illness	✓	✓	✓
SRO	Nausea	✓	✓	✓
SRO	Pyrexia	✓	✓	✓

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