YKX-20150-97724

2 vaccinations 14 coded responses 25 check-ins 14 free-text entries 0 call cases

Sex: Female
Age at first dose: 36-40
ZIP prefix: 223 / VA
Registered: 2021-02-25

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

2021-02-25
Registered in v-safe
2021-02-25
Dose 1 — Pfizer-BioNTech
2021-02-25
Survey response — day 0, dose 1
MedDRA: Body temperature normal — Feeling: Fair · Fever · Headache, Fatigue or tiredness

Free text: Normal temp 97.3. Current temp 98.6

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-02-26
Survey response — days 1–6 daily, dose 1
MedDRA: Pyrexia — Feeling: Good · Site: Pain · Fever · Headache

Free text: Fever. Normal temp 97.3. Today 99.3

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: Unevaluable event — Feeling: Fair · Fever · Headache, Fatigue or tiredness

Free text: Normal temp 97.3. Current temp 98.8

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: Unevaluable event — Feeling: Good · Fever · Fatigue or tiredness

Free text: Normal temp 97.3 current temp 98.0

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: Unevaluable event — Feeling: Fair · Fever · Headache, Fatigue or tiredness

Free text: Normal temp 97.3. Current temp 98.7

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: Unevaluable event — Feeling: Good · Fever · Headache

Free text: Normal temp: 97.3, current temp 98.5

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: Unevaluable event — Feeling: Good · Fever · Fatigue or tiredness

Free text: Current temp 98.4, regular temp 97.3

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

Free text: Normal temp: 97.3, current temp: 98.1

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

Adult check-in
2021-03-18
Dose 2 — Pfizer-BioNTech
2021-03-18
Survey response — day 0, dose 2
MedDRA: Unevaluable event — Feeling: Good · Site: Pain · Fever · Headache

Free text: Current temp 98.5, normal temp 97.3

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-19
Survey response — days 1–6 daily, dose 2
MedDRA: Unevaluable event — Feeling: Good · Site: Pain · Fever

Free text: Normal temp: 97.3 current temp: 98.0

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-20
Survey response — days 1–6 daily, dose 2
MedDRA: Unevaluable event — Feeling: Fair · Site: Pain · Fever · Headache

Free text: Current temp: 98.1. Normal temp: 97.3

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-21
Health check-in — days 1–6 daily, dose 2
Feeling: Good · Site: Pain · None

Adult check-in
2021-03-22
Health check-in — days 1–6 daily, dose 2
Feeling: Good · None

Adult check-in
2021-03-23
Health check-in — days 1–6 daily, dose 2
Feeling: Good · None

Adult check-in
2021-03-24
Health check-in — days 1–6 daily, dose 2
Feeling: Good · None

Adult check-in
2021-03-25
Health check-in — day 7, dose 2
Feeling: Good · None

Adult check-in
2021-04-01
Health check-in — day 14, dose 2
Feeling: Good

Adult check-in
2021-04-08
Health check-in — day 21, dose 2
Feeling: Good

Adult check-in
2021-04-15
Survey response — day 28, dose 2
MedDRA: Oligomenorrhoea — Feeling: Good

Free text: My period was 10 days late following the 2nd vaccine. My cycle has always run 27-29 days. No other medical changes during that month to trigger the delay.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-22
Health check-in — day 35, dose 2
Feeling: Good

Adult check-in
2021-04-29
Health check-in — day 42, dose 2
Feeling: Good

Adult check-in
2021-06-17
Survey response — 3 months, dose 2
MedDRA: Menstruation delayed — Feeling: Good

Free text: Period was delayed for first 2 cycles post vax. Now Normal.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-09-20
Health check-in — 6 months, dose 2
Feeling: Good

Adult check-in
2022-03-19
Survey response — 12 months, dose 2
MedDRA: Menstruation irregular — Feeling: Good

Free text: Period cycles were always 28 days pre-vaccine. Now they have much wider swings starting the month after vax #2. +10 days/ -4 day variances from old cycle.

MedDRA releases: 2024-11 · check-in free text available

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-02-25	Pfizer-BioNTech
2	2021-03-18	Pfizer-BioNTech

Free text

Release 4 — day 0, dose 1

2021-02-25

Systemic reaction (other): Normal temp 97.3. Current temp 98.6

Release 4 — days 1–6 daily, dose 1

2021-02-26

Systemic reaction (other): Fever. Normal temp 97.3. Today 99.3

2021-02-27

Systemic reaction (other): Normal temp 97.3. Current temp 98.8

2021-02-28

Systemic reaction (other): Normal temp 97.3 current temp 98.0

2021-03-01

Systemic reaction (other): Normal temp 97.3. Current temp 98.7

2021-03-02

Systemic reaction (other): Normal temp: 97.3, current temp 98.5

Release 5 — days 1–6 daily, dose 1

2021-03-03

Systemic reaction (other): Current temp 98.4, regular temp 97.3

Release 5 — day 7, dose 1

2021-03-04

Systemic reaction (other): Normal temp: 97.3, current temp: 98.1

Release 5 — day 0, dose 2

2021-03-18

Systemic reaction (other): Current temp 98.5, normal temp 97.3

Release 5 — days 1–6 daily, dose 2

2021-03-19

Systemic reaction (other): Normal temp: 97.3 current temp: 98.0

Release 6 — days 1–6 daily, dose 2

2021-03-20

Systemic reaction (other): Current temp: 98.1. Normal temp: 97.3

Release 7 — day 28, dose 2

2021-04-15

Symptoms: My period was 10 days late following the 2nd vaccine. My cycle has always run 27-29 days. No other medical changes during that month to trigger the delay.

Release 9 — 3 months, dose 2

2021-06-17

Symptoms: Period was delayed for first 2 cycles post vax. Now Normal.

Release 11 — 12 months, dose 2

2022-03-19

Symptoms: Period cycles were always 28 days pre-vaccine. Now they have much wider swings starting the month after vax #2. +10 days/ -4 day variances from old cycle.

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	Menstruation delayed	✓	✓	✓
SD	Menstruation irregular	·	·	✓
SD	Oligomenorrhoea	✓	✓	✓
SRO	Body temperature normal	✓	✓	✓
SRO	Pyrexia	✓	✓	✓
SRO	Unevaluable event	✓	✓	✓

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