26Y-32832-35307

4 vaccinations 8 coded responses 22 check-ins 8 free-text entries 0 call cases

Sex: Female
Age at first dose: 26-30
ZIP prefix: 063 / CT
Registered: 2021-04-28

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

2021-04-06
Dose 1 — Pfizer-BioNTech
2021-04-28
Registered in v-safe
2021-04-28
Dose 2 — Pfizer-BioNTech
2021-04-28
Survey response — day 0, dose 2
MedDRA: Unevaluable event — Feeling: Fair · Headache

Free text: About to start my period so could also be from that

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-29
Survey response — days 1–6 daily, dose 2
MedDRA: Brain fog — Feeling: Fair · Site: Pain, Swelling · Headache, Muscle or body aches, Fatigue or tiredness · Be unable to do your normal daily activities

Free text: I usually react to pressure changes and the weather is weird so confounding variable. Im also about to start my period. But my brain just apparently isnt clicking! I keep forgetting things but I cant tell Im foggy.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-30
Survey response — days 1–6 daily, dose 2
MedDRA: Myalgia — Feeling: Fair · Site: Pain, Swelling · Headache, Muscle or body aches, Fatigue or tiredness, Abdominal pain

Free text: I started my period, so thats definitely causing some of this. I got the shot in my right arm, and today it feels like Im trying to keep a golf ball pinned in my armpit. I dont think its swollen on that side, but the muscles ACHE and the sensation is bizarre.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-05-01
Survey response — days 1–6 daily, dose 2
MedDRA: Abdominal pain, Brain fog, Lymphadenopathy, Peripheral swelling — Feeling: Good · Site: Swelling · Headache, Muscle or body aches, Abdominal pain

Free text: I am on my period, so that is likely the cause of the abdominal pain. The arm swelling makes it look like I actually have impressive muscles. Lymph node in my armpit on that side is GIGANTIC. Also I have pretty significant brain fog!

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-05-02
Survey response — days 1–6 daily, dose 2
MedDRA: Fatigue, Headache, Oligomenorrhoea — Feeling: Good · Site: Swelling · Headache, Fatigue or tiredness, Abdominal pain

Free text: Definitely feeling more normal from the last few days! Still on my period so that is almost certainly the abdominal pain. Headache could be chalked up to either that or weather/pressure changes. And I keep feeling just all of a sudden BOOM exhausted around 7pm.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-05-03
Survey response — days 1–6 daily, dose 2
MedDRA: Fatigue — Feeling: Good · Site: Swelling · Fatigue or tiredness

Free text: I think its a regular level of tired.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-05-04
Survey response — days 1–6 daily, dose 2
MedDRA: Hypomenorrhoea — Feeling: Good

Free text: Still having light bleeding from my period.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-05-05
Survey response — day 7, dose 2
MedDRA: Unevaluable event — Feeling: Good · Diarrhea

Free text: Still on my period so diarrhea probably related to that

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-05-12
Health check-in — day 14, dose 2
Feeling: Good

Adult check-in
2021-05-19
Health check-in — day 21, dose 2
Feeling: Good

Adult check-in
2021-05-26
Health check-in — day 28, dose 2
Feeling: Good

Adult check-in
2021-06-02
Health check-in — day 35, dose 2
Feeling: Fair

Adult check-in
2021-06-09
Health check-in — day 42, dose 2
Feeling: Good

Adult check-in
2021-07-28
Health check-in — 3 months, dose 2
Feeling: Good

Adult check-in
2021-10-27
Health check-in — 6 months, dose 2
Feeling: Fair

Adult check-in
2021-12-06
Dose 3 — Moderna
Co-administered: Flu
2022-04-28
Health check-in — 12 months, dose 2
Feeling: Fair

Adult check-in
2022-06-06
Health check-in — 6 months, dose 3
Feeling: Good

Adult check-in
2022-09-12
Dose 4 — Pfizer-BioNTech
2022-10-11
Health check-in — day 28, dose 4
Feeling: Good

Adult check-in
2022-10-17
Health check-in — day 35, dose 4
Feeling: Good

Adult check-in
2022-10-24
Health check-in — day 42, dose 4
Feeling: Good

Adult check-in
2022-12-12
Health check-in — 3 months, dose 4
Feeling: Poor

Adult check-in
2023-03-13
Health check-in — 6 months, dose 4
Feeling: Good

Adult check-in

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-04-06	Pfizer-BioNTech
2	2021-04-28	Pfizer-BioNTech
3	2021-12-06	Moderna	Flu
4	2022-09-12	Pfizer-BioNTech	No

Free text

Release 8 — day 0, dose 2

2021-04-28

Systemic reaction (other): About to start my period so could also be from that

Release 8 — days 1–6 daily, dose 2

2021-04-29

Systemic reaction (other): I usually react to pressure changes and the weather is weird so confounding variable. Im also about to start my period. But my brain just apparently isnt clicking! I keep forgetting things but I cant tell Im foggy.

2021-04-30

Systemic reaction (other): I started my period, so thats definitely causing some of this. I got the shot in my right arm, and today it feels like Im trying to keep a golf ball pinned in my armpit. I dont think its swollen on that side, but the muscles ACHE and the sensation is bizarre.

2021-05-01

Systemic reaction (other): I am on my period, so that is likely the cause of the abdominal pain. The arm swelling makes it look like I actually have impressive muscles. Lymph node in my armpit on that side is GIGANTIC. Also I have pretty significant brain fog!

2021-05-02

Systemic reaction (other): Definitely feeling more normal from the last few days! Still on my period so that is almost certainly the abdominal pain. Headache could be chalked up to either that or weather/pressure changes. And I keep feeling just all of a sudden BOOM exhausted around 7pm.

2021-05-03

Systemic reaction (other): I think its a regular level of tired.

2021-05-04

Systemic reaction (other): Still having light bleeding from my period.

Release 8 — day 7, dose 2

2021-05-05

Systemic reaction (other): Still on my period so diarrhea probably related to that

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 pain	✓	✓	✓
SRO	Brain fog	✓	✓	✓
SRO	Fatigue	✓	✓	✓
SRO	Headache	✓	✓	✓
SRO	Hypomenorrhoea	✓	✓	✓
SRO	Lymphadenopathy	✓	✓	✓
SRO	Myalgia	✓	✓	✓
SRO	Oligomenorrhoea	✓	✓	✓
SRO	Peripheral swelling	✓	✓	✓
SRO	Unevaluable event	✓	✓	✓

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