555-18340-98019 · OpenVSafe

Timeline

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

2021-02-15
Registered in v-safe
2021-02-15
Dose 1 — Pfizer-BioNTech
2021-02-15
Health check-in — day 0, dose 1
Feeling: Fair · Site: Pain · Fatigue or tiredness · Be unable to do your normal daily activities

Adult check-in
2021-02-16
Survey response — days 1–6 daily, dose 1
MedDRA: Poor quality sleep — Feeling: Fair · Site: Pain · Fever · Chills, Headache, Joint pains, Muscle or body aches, Fatigue or tiredness · Be unable to do your normal daily activities

Free text: wakefulness at 330 am, then fitful sleep

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-02-18
Health check-in — days 1–6 daily, dose 1
Feeling: Good · None

Adult check-in
2021-02-19
Health check-in — days 1–6 daily, dose 1
Feeling: Good · None

Adult check-in
2021-02-20
Health check-in — days 1–6 daily, dose 1
Feeling: Good · Headache, Fatigue or tiredness

Adult check-in
2021-02-21
Health check-in — days 1–6 daily, dose 1
Feeling: Good · None

Adult check-in
2021-02-22
Health check-in — day 7, dose 1
Feeling: Good · None

Adult check-in
2021-03-01
Health check-in — day 14, dose 1
Feeling: Good

Adult check-in
2021-03-08
Health check-in — day 21, dose 1
Feeling: Good

Adult check-in
2021-03-09
Dose 2 — Pfizer-BioNTech
2021-03-15
Health check-in — days 1–6 daily, dose 2
Feeling: Fair · Fatigue or tiredness · Be unable to do your normal daily activities

Adult check-in
2021-03-18
Health check-in — day 7, dose 2
Feeling: Fair · Headache, Fatigue or tiredness · Be unable to do your normal daily activities

Adult check-in
2021-03-23
Survey response — day 14, dose 2
MedDRA: Aphasia, Cognitive disorder, Feeling abnormal, Memory impairment, Sensory overload — Feeling: Fair · Be unable to do your normal daily activities

Free text: I would t call it brain fog but its adjacent. I feel like my executive function has been affected in the last week - Im easily overstimulated, struggling to find words or bits of knowledge.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-30
Health check-in — day 21, dose 2
Feeling: Fair

Adult check-in
2021-04-08
Health check-in — day 28, dose 2
Feeling: Good

Adult check-in
2021-04-20
Health check-in — day 42, dose 2
Feeling: Good

Adult check-in
2021-06-08
Survey response — 3 months, dose 2
MedDRA: Brain fog, Haemorrhage — Feeling: Fair · Be unable to do your normal daily activities

Free text: 2 weeks of brain fog post 2nd dose (I am s/p COVID positive in January 2021). I also had break-through bleeding after vaccination but typically have no cycle secondary to IUD

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-09-09
Survey response — 6 months, dose 2
MedDRA: Brain fog, Distractibility, Disturbance in attention, Pre-existing disease — Feeling: Poor · Be unable to work or attend school, Be unable to do your normal daily activities

Free text: Poor attention span, easily distracted, brain fog I had some mild symptoms like this when I had covid in January 2021 but it came back significantly for 2 weeks after my second Pfizer dose and sporadically every since.

MedDRA releases: 2024-11 · check-in free text available
2022-03-09
Survey response — 12 months, dose 2
MedDRA: Brain fog, Disturbance in attention, Executive dysfunction, Migraine — Feeling: Fair · Be unable to do your normal daily activities, Get care from a doctor or other healthcare professional · Telehealth, virtual health, or email health consultation

Free text: Brain fog, trouble concentrating/executive dysfunction, migraine

MedDRA releases: 2024-11 · check-in free text available
2022-03-09
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

Telehealth, virtual health, or email health consultation · 1 call case(s)
2022-03-11
Call 1 — Left Voicemail

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-02-15	Pfizer-BioNTech
2	2021-03-09	Pfizer-BioNTech

Call center

1 call center case

1 unsuccessful

See the call center timeline

Free text

Release 4 — days 1–6 daily, dose 1

2021-02-16

Systemic reaction (other): wakefulness at 330 am, then fitful sleep

Release 6 — day 14, dose 2

2021-03-23

Symptoms: I would t call it brain fog but its adjacent. I feel like my executive function has been affected in the last week - Im easily overstimulated, struggling to find words or bits of knowledge.

Release 8 — 3 months, dose 2

2021-06-08

Symptoms: 2 weeks of brain fog post 2nd dose (I am s/p COVID positive in January 2021). I also had break-through bleeding after vaccination but typically have no cycle secondary to IUD

Release 9 — 6 months, dose 2

2021-09-09

Symptoms: Poor attention span, easily distracted, brain fog I had some mild symptoms like this when I had covid in January 2021 but it came back significantly for 2 weeks after my second Pfizer dose and sporadically every since.

Release 11 — 12 months, dose 2

2022-03-09

Symptoms: Brain fog, trouble concentrating/executive dysfunction, migraine

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	Aphasia	✓	✓	✓
SD	Brain fog	✓	✓	✓
SD	Cognitive disorder	✓	✓	✓
SD	Distractibility	·	·	✓
SD	Disturbance in attention	·	·	✓
SD	Executive dysfunction	·	·	✓
SD	Feeling abnormal	✓	✓	✓
SD	Haemorrhage	✓	✓	✓
SD	Memory impairment	✓	✓	✓
SD	Migraine	·	·	✓
SD	Pre-existing disease	·	·	✓
SD	Sensory overload	✓	✓	✓
SRO	Poor quality sleep	✓	✓	✓

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