UJM-29687-43674

2 vaccinations 4 coded responses 21 check-ins 4 free-text entries 4 call cases

Sex: Female
Age at first dose: 31-35
ZIP prefix: 925 / CA
Registered: 2020-12-30

Relationship: Self
Race: Multiracial
Ethnicity: Hispanic or Latino

Possible VAERS report

VAERS ID	Confidence	Score	Runner-up	Shared symptoms	Dose	State	VAERS vaccinated / onset / received	Call case
2050820 (opens in a new window)	high	10 / 11	-3	3 of 7 VAERS symptoms	same dose (2)	CA matches	2021-01-19 / 2021-01-19 / 2022-01-20 received the same day as the last call	case 80445

From the VAERS matching of call center cases (loader/vaers_match_*). Only the best match is shown, and only if it scores 8 or more out of 11. The score adds up timing (VAERS received soon after the call center contact), dose and shared symptoms; state only breaks ties. Confidence is high when the score is 8+ and at least 3 points ahead of the runner-up, medium when 5+ and 2 ahead, otherwise low. A match is a likely link, not a confirmed one.

Timeline

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

2020-12-29
Dose 1 — Pfizer-BioNTech
2020-12-30
Registered in v-safe
2020-12-30
Survey response — days 1–6 daily, dose 1
MedDRA: Feeling abnormal — Feeling: Fair · Site: Pain · Headache, Fatigue or tiredness, Nausea · Be unable to do your normal daily activities

Free text: Brain fog moderate to severe

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2020-12-30
Report sent to call center — days 1–6 daily, dose 1
Be unable to do your normal daily activities

1 call case(s)
2020-12-31
Health check-in — days 1–6 daily, dose 1
Feeling: Good · Site: Pain · None

Adult check-in
2021-01-01
Health check-in — days 1–6 daily, dose 1
Feeling: Fair · Fever · Chills, Fatigue or tiredness · Be unable to do your normal daily activities

Adult check-in
2021-01-01
Report sent to call center — days 1–6 daily, dose 1
Be unable to do your normal daily activities

1 call case(s)
2021-01-02
Health check-in — days 1–6 daily, dose 1
Feeling: Fair · Fever · Chills, Fatigue or tiredness · Be unable to do your normal daily activities

Adult check-in
2021-01-02
Report sent to call center — days 1–6 daily, dose 1
Be unable to do your normal daily activities

1 call case(s)
2021-01-03
Health check-in — days 1–6 daily, dose 1
Feeling: Good · Fatigue or tiredness

Adult check-in
2021-01-07
Health check-in — day 7, dose 1
Feeling: Good · None

Adult check-in
2021-01-19
Dose 2 — Pfizer-BioNTech
2021-01-19
Survey response — day 0, dose 2
MedDRA: Brain fog, Cold-stimulus headache — Feeling: Poor · Site: Pain · Fever · Chills, Headache, Fatigue or tiredness · Be unable to do your normal daily activities

Free text: Brain fog

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-01-20
Health check-in — days 1–6 daily, dose 2
Feeling: Poor · Site: Pain, Itching · Fever · Headache, Fatigue or tiredness · Be unable to work, Be unable to do your normal daily activities

Adult check-in
2021-01-21
Health check-in — days 1–6 daily, dose 2
Feeling: Fair · Site: Pain · Headache, Fatigue or tiredness

Adult check-in
2021-01-23
Health check-in — days 1–6 daily, dose 2
Feeling: Fair · Headache, Fatigue or tiredness

Adult check-in
2021-01-24
Health check-in — days 1–6 daily, dose 2
Feeling: Fair · None

Adult check-in
2021-01-25
Health check-in — days 1–6 daily, dose 2
Feeling: Good · None

Adult check-in
2021-01-28
Health check-in — day 7, dose 2
Feeling: Good · None

Adult check-in
2021-02-02
Health check-in — day 14, dose 2
Feeling: Good

Adult check-in
2021-02-09
Health check-in — day 21, dose 2
Feeling: Good

Adult check-in
2021-02-16
Health check-in — day 28, dose 2
Feeling: Fair

Adult check-in
2021-02-23
Health check-in — day 35, dose 2
Feeling: Good

Adult check-in
2021-03-04
Health check-in — day 42, dose 2
Feeling: Fair

Adult check-in
2021-04-20
Health check-in — 3 months, dose 2
Feeling: Good

Adult check-in
2021-07-20
Survey response — 6 months, dose 2
MedDRA: Asthenia, Dysmenorrhoea, Heavy menstrual bleeding — Feeling: Good

Free text: Heavier menstrual cycle with severe, almost debilitating, cramping. Makes ot difficult to perform work duties during this time.

MedDRA releases: 2024-11 · check-in free text available
2022-01-19
Survey response — 12 months, dose 2
MedDRA: Dysmenorrhoea, Exercise tolerance decreased, Heart rate increased, Heavy menstrual bleeding, Pregnancy — Feeling: Fair · Be unable to do your normal daily activities, Get care from a doctor or other healthcare professional · Emergency room or emergency department visit

Free text: Pregnant. since the shot exercise has been difficult. Going up stairs causes very rapid herat rate for example. Also, it took 8 months for period to finally be less painful and less heavy.

MedDRA releases: 2024-11 · check-in free text available
2022-01-19
Report sent to call center — 12 months, dose 2
Be unable to do your normal daily activities · Get care from a doctor or other healthcare professional

Emergency room or emergency department visit · 1 call case(s)
2022-01-20
Call successful
Completed over the phone

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2020-12-29	Pfizer-BioNTech
2	2021-01-19	Pfizer-BioNTech

Call center

4 call center cases

1 successful · 3 priority 2/3 (triaged and no follow up)

VAERS report filed, before or during a call: 1

See the call center timeline

Free text

Release 1 — days 1–6 daily, dose 1

2020-12-30

Systemic reaction (other): Brain fog moderate to severe

Release 2 — day 0, dose 2

2021-01-19

Systemic reaction (other): Brain fog

Release 9 — 6 months, dose 2

2021-07-20

Symptoms: Heavier menstrual cycle with severe, almost debilitating, cramping. Makes ot difficult to perform work duties during this time.

Release 10 — 12 months, dose 2

2022-01-19

Symptoms: Pregnant. since the shot exercise has been difficult. Going up stairs causes very rapid herat rate for example. Also, it took 8 months for period to finally be less painful and less heavy.

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	Asthenia	·	·	✓
SD	Dysmenorrhoea	·	·	✓
SD	Exercise tolerance decreased	·	·	✓
SD	Heart rate increased	·	·	✓
SD	Heavy menstrual bleeding	·	·	✓
SD	Pregnancy	·	·	✓
SRO	Brain fog	✓	·	✓
SRO	Cold-stimulus headache	○	✓	○
SRO	Feeling abnormal	✓	✓	✓

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