4YK-12856-75745 · OpenVSafe

Timeline

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

2021-04-22
Dose 1 — Pfizer-BioNTech
2021-05-18
Registered in v-safe
2021-05-18
Dose 2 — Pfizer-BioNTech
2021-05-19
Health check-in — days 1–6 daily, dose 2
Feeling: Fair · Site: Pain · Headache, Muscle or body aches

Adult check-in
2021-05-20
Health check-in — days 1–6 daily, dose 2
Feeling: Good · Site: Pain · Headache

Adult check-in
2021-05-22
Health check-in — days 1–6 daily, dose 2
Feeling: Good · None

Adult check-in
2021-05-23
Survey response — days 1–6 daily, dose 2
MedDRA: Gastrointestinal disorder — Feeling: Good

Free text: Had some digestive issues yesterday

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-05-24
Health check-in — days 1–6 daily, dose 2
Feeling: Good · None

Adult check-in
2021-05-25
Health check-in — day 7, dose 2
Feeling: Good · None

Adult check-in
2021-06-01
Health check-in — day 14, dose 2
Feeling: Good

Adult check-in
2021-06-08
Health check-in — day 21, dose 2
Feeling: Good

Adult check-in
2021-06-15
Survey response — day 28, dose 2
MedDRA: Menstruation delayed — Feeling: Good

Free text: Delayed menstrual period. After the first dose I had my period on time but it lasted for more than a week, which is not normal for me. Now after the second dose it arrived about two weeks late but the length of time was slightly bellow average.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-06-23
Health check-in — day 35, dose 2
Feeling: Good

Adult check-in
2021-06-29
Health check-in — day 42, dose 2
Feeling: Good

Adult check-in
2021-08-17
Health check-in — 3 months, dose 2
Feeling: Good

Adult check-in
2021-11-16
Health check-in — 6 months, dose 2
Feeling: Good

Adult check-in
2021-12-17
Dose 3 — Pfizer-BioNTech
2022-06-17
Health check-in — 6 months, dose 3
Feeling: Good

Adult check-in
2022-10-11
Dose 4 — Pfizer-BioNTech
Co-administered: Flu
2022-10-24
Survey response — day 7, dose 4
MedDRA: Premenstrual syndrome — Feeling: Good

Free text: I think my pre-menstrual syndrome related symptoms are intensified

MedDRA releases: 2024-11 · check-in free text available
2022-10-26
Survey response — day 14, dose 4
MedDRA: Anxiety, Premenstrual syndrome — Feeling: Good · Be unable to do your normal daily activities

Free text: This time around my menstrual cycle seems to not have been delayed, but in the premenstrual period I felt like I was reaching clinical levels of anxiety, which is not normal for me.

MedDRA releases: 2024-11 · check-in free text available
2022-11-01
Health check-in — day 21, dose 4
Feeling: Good

Adult check-in
2022-11-10
Health check-in — day 28, dose 4
Feeling: Good

Adult check-in
2022-11-16
Health check-in — day 35, dose 4
Feeling: Good

Adult check-in
2022-11-23
Survey response — day 42, dose 4
MedDRA: Amenorrhoea — Feeling: Good

Free text: Missed period

MedDRA releases: 2024-11 · check-in free text available
2023-01-10
Survey response — 3 months, dose 4
MedDRA: Nasopharyngitis, SARS-CoV-2 test negative — Feeling: Good · Get care from a doctor or other healthcare professional · Outpatient clinic or urgent care clinic visit

MedDRA releases: 2024-11
2023-01-10
Report sent to call center — 3 months, dose 4
Get care from a doctor or other healthcare professional

Outpatient clinic or urgent care clinic visit · 1 call case(s)
2023-01-11
Call successful
Not applicable – Participant does not believe symptoms are related to vaccine and does not wish to fill
2023-04-14
Health check-in — 6 months, dose 4
Feeling: Good

Adult check-in

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-04-22	Pfizer-BioNTech
2	2021-05-18	Pfizer-BioNTech
3	2021-12-17	Pfizer-BioNTech	No
4	2022-10-11	Pfizer-BioNTech	Flu

Call center

1 call center case

1 successful

See the call center timeline

Free text

Release 8 — days 1–6 daily, dose 2

2021-05-23

Systemic reaction (other): Had some digestive issues yesterday

Release 9 — day 28, dose 2

2021-06-15

Symptoms: Delayed menstrual period. After the first dose I had my period on time but it lasted for more than a week, which is not normal for me. Now after the second dose it arrived about two weeks late but the length of time was slightly bellow average.

Release 12 — day 7, dose 4

2022-10-24

Systemic reaction (other): I think my pre-menstrual syndrome related symptoms are intensified

Release 12 — day 14, dose 4

2022-10-26

Symptoms: This time around my menstrual cycle seems to not have been delayed, but in the premenstrual period I felt like I was reaching clinical levels of anxiety, which is not normal for me.

Release 12 — day 42, dose 4

2022-11-23

Symptoms: Missed period

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	Amenorrhoea	·	·	✓
SD	Anxiety	·	·	✓
SD	Menstruation delayed	✓	✓	✓
SD	Nasopharyngitis	·	·	✓
SD	Premenstrual syndrome	·	·	✓
SD	SARS-CoV-2 test negative	·	·	✓
SRO	Gastrointestinal disorder	✓	✓	✓
SRO	Premenstrual syndrome	·	·	✓

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