4VR-30837-37928

2 vaccinations 10 coded responses 21 check-ins 10 free-text entries 0 call cases

Sex: Female
Age at first dose: 41-45
ZIP prefix: 522 / IA
Registered: 2021-03-30

Relationship: Self
Race: White
Ethnicity: Not Hispanic or Latino

Timeline Vaccinations Free text MedDRA terms

Timeline

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

2021-03-28
Dose 1 — Pfizer-BioNTech
2021-03-30
Registered in v-safe
2021-03-30
Health check-in — days 1–6 daily, dose 1
Feeling: Fair · Muscle or body aches, Fatigue or tiredness

Adult check-in
2021-03-31
Survey response — days 1–6 daily, dose 1
MedDRA: Lymphadenopathy — Feeling: Good · Muscle or body aches, Fatigue or tiredness

Free text: Swollen lymph nodes

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-01
Survey response — days 1–6 daily, dose 1
MedDRA: Migraine, Tinnitus — Feeling: Poor · Headache, Muscle or body aches, Nausea · Be unable to work, Be unable to do your normal daily activities

Free text: Migraine, ears ringing

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-02
Survey response — days 1–6 daily, dose 1
MedDRA: Muscular weakness — Feeling: Fair · Headache, Muscle or body aches, Fatigue or tiredness

Free text: Legs feel weak

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-03
Health check-in — days 1–6 daily, dose 1
Feeling: Good · Muscle or body aches

Adult check-in
2021-04-04
Survey response — day 7, dose 1
MedDRA: Pain in extremity — Feeling: Good · Muscle or body aches

Free text: Slight pain in calf area

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-11
Survey response — day 14, dose 1
MedDRA: Pain in extremity — Feeling: Good

Free text: My calf on my left side has continued to hurt since a couple days after the vaccine. I dont know if its related or not.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-19
Dose 2 — Pfizer-BioNTech
2021-04-19
Survey response — day 21, dose 1
MedDRA: Arthralgia, Migraine, Pain in extremity — Feeling: Poor · Be unable to do your normal daily activities

Free text: Pain in calf/ankle. Ive had 2 migraines since the first dose. My lower legs/feet vibrate at night.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-20
Health check-in — days 1–6 daily, dose 2
Feeling: Poor · Site: Pain · Fever · Headache, Muscle or body aches, Fatigue or tiredness · Be unable to work, Be unable to do your normal daily activities

Adult check-in
2021-04-21
Health check-in — days 1–6 daily, dose 2
Feeling: Good · Site: Pain · Muscle or body aches

Adult check-in
2021-04-22
Health check-in — days 1–6 daily, dose 2
Feeling: Good · Headache, Muscle or body aches

Adult check-in
2021-04-23
Health check-in — days 1–6 daily, dose 2
Feeling: Good · Muscle or body aches

Adult check-in
2021-04-24
Survey response — days 1–6 daily, dose 2
MedDRA: Tinnitus — Feeling: Good · Headache

Free text: Ears ringing

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-26
Health check-in — day 7, dose 2
Feeling: Good · None

Adult check-in
2021-05-03
Survey response — day 14, dose 2
MedDRA: Dysmenorrhoea, Menstruation delayed — Feeling: Good

Free text: My period is a week late, which is really unusual. But Im still having cramps, as I typically would.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-05-10
Survey response — day 21, dose 2
MedDRA: Menstruation delayed — Feeling: Good

Free text: My period still hasnt come since the second dose of Pfizer. This is the latest it has been in over a decade. Its almost 2 weeks late. I took a pregnancy test, and it was negative.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-05-17
Survey response — day 28, dose 2
MedDRA: Menstrual disorder — Feeling: Good

Free text: My period was well over 2 weeks late after my second dose of Pfizer. Ive been tracking my period for over a decade & this is the latest it has ever been by far. My cycle was 42 days. Its usually 22 to 26 days. The standard deviation is 2.6 days

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-05-24
Health check-in — day 35, dose 2
Feeling: Good

Adult check-in
2021-06-02
Health check-in — day 42, dose 2
Feeling: Good

Adult check-in
2021-07-19
Health check-in — 3 months, dose 2
Feeling: Good

Adult check-in
2021-10-18
Health check-in — 6 months, dose 2
Feeling: Good

Adult check-in

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-03-28	Pfizer-BioNTech
2	2021-04-19	Pfizer-BioNTech

Free text

Release 6 — days 1–6 daily, dose 1

2021-03-31

Systemic reaction (other): Swollen lymph nodes

2021-04-01

Systemic reaction (other): Migraine, ears ringing

2021-04-02

Systemic reaction (other): Legs feel weak

Release 6 — day 7, dose 1

2021-04-04

Systemic reaction (other): Slight pain in calf area

Release 7 — day 14, dose 1

2021-04-11

Symptoms: My calf on my left side has continued to hurt since a couple days after the vaccine. I dont know if its related or not.

Release 7 — day 21, dose 1

2021-04-19

Symptoms: Pain in calf/ankle. Ive had 2 migraines since the first dose. My lower legs/feet vibrate at night.

Release 7 — days 1–6 daily, dose 2

2021-04-24

Systemic reaction (other): Ears ringing

Release 8 — day 14, dose 2

2021-05-03

Symptoms: My period is a week late, which is really unusual. But Im still having cramps, as I typically would.

Release 8 — day 21, dose 2

2021-05-10

Symptoms: My period still hasnt come since the second dose of Pfizer. This is the latest it has been in over a decade. Its almost 2 weeks late. I took a pregnancy test, and it was negative.

Release 8 — day 28, dose 2

2021-05-17

Symptoms: My period was well over 2 weeks late after my second dose of Pfizer. Ive been tracking my period for over a decade & this is the latest it has ever been by far. My cycle was 42 days. Its usually 22 to 26 days. The standard deviation is 2.6 days

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	Arthralgia	✓	✓	✓
SD	Dysmenorrhoea	✓	✓	✓
SD	Menstrual disorder	✓	✓	✓
SD	Menstruation delayed	✓	✓	✓
SD	Migraine	✓	✓	✓
SD	Pain in extremity	✓	✓	✓
SRO	Lymphadenopathy	✓	✓	✓
SRO	Migraine	✓	✓	✓
SRO	Muscular weakness	✓	✓	✓
SRO	Pain in extremity	✓	✓	✓
SRO	Tinnitus	✓	✓	✓

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