Y4F-24405-37785

2 vaccinations 9 coded responses 21 check-ins 9 free-text entries 3 call cases

Sex: Female
Age at first dose: 41-45
ZIP prefix: 680 / NE
Registered: 2021-02-22

Relationship: Self
Race: White
Ethnicity: Not Hispanic or Latino

Timeline

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

2021-02-20
Dose 1 — Pfizer-BioNTech
2021-02-22
Registered in v-safe
2021-02-22
Health check-in — days 1–6 daily, dose 1
Feeling: Good · None

Adult check-in
2021-02-23
Survey response — days 1–6 daily, dose 1
MedDRA: Muscle twitching — Feeling: Good

Free text: Muscle twitches - mild

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-02-24
Survey response — days 1–6 daily, dose 1
MedDRA: Muscle spasms — Feeling: Good · Chills, Muscle or body aches, Fatigue or tiredness

Free text: Mild muscle spasms at night

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-02-25
Health check-in — days 1–6 daily, dose 1
Feeling: Fair · Headache

Adult check-in
2021-02-26
Health check-in — days 1–6 daily, dose 1
Feeling: Good · None

Adult check-in
2021-02-27
Health check-in — day 7, dose 1
Feeling: Good · None

Adult check-in
2021-03-06
Survey response — day 14, dose 1
MedDRA: Muscle spasms — Feeling: Good · Get care from a doctor or other healthcare professional · Telehealth, virtual health, or email health consultation

Free text: Muscles spasms.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-06
Report sent to call center — day 14, dose 1
Get care from a doctor or other healthcare professional

1 call case(s)
2021-03-13
Dose 2 — Pfizer-BioNTech
2021-03-13
Health check-in — day 0, dose 2
Feeling: Good · None

Adult check-in
2021-03-14
Health check-in — days 1–6 daily, dose 2
Feeling: Good · Fatigue or tiredness

Adult check-in
2021-03-15
Health check-in — days 1–6 daily, dose 2
Feeling: Good · None

Adult check-in
2021-03-16
Survey response — days 1–6 daily, dose 2
MedDRA: Insomnia, Lymph node pain, Muscle twitching — Feeling: Fair · Be unable to do your normal daily activities

Free text: Muscle twitches, insomnia, pain from my lymph node under my arm.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-17
Survey response — days 1–6 daily, dose 2
MedDRA: Lymph node pain, Lymphadenopathy, Muscle twitching — Feeling: Good

Free text: Swollen sore lymph node and muscle twitches throughout body

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-18
Survey response — days 1–6 daily, dose 2
MedDRA: Muscle twitching — Feeling: Good

Free text: Muscle twitches

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-20
Survey response — day 7, dose 2
MedDRA: Myalgia — Feeling: Good

Free text: Muscle shakes

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-27
Health check-in — day 14, dose 2
Feeling: Good

Adult check-in
2021-04-03
Health check-in — day 21, dose 2
Feeling: Good

Adult check-in
2021-04-10
Health check-in — day 28, dose 2
Feeling: Good

Adult check-in
2021-04-17
Health check-in — day 35, dose 2
Feeling: Good

Adult check-in
2021-04-24
Survey response — day 42, dose 2
MedDRA: Dyskinesia, Muscle twitching, Office visit — Feeling: Good · Get care from a doctor or other healthcare professional · Outpatient clinic or urgent care clinic visit

Free text: Twitches and jerks. Had to see a neurologist.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-24
Report sent to call center — day 42, dose 2
Get care from a doctor or other healthcare professional

1 call case(s)
2021-06-12
Survey response — 3 months, dose 2
MedDRA: Hepatic enzyme abnormal, Muscle spasms, Muscle twitching, Office visit, Tremor — Feeling: Fair · Get care from a doctor or other healthcare professional · Outpatient clinic or urgent care clinic visit

Free text: Symptoms: Random internal tremors, muscle twitches and spasms, elevated liver enzymes. Always were normal previously. · Healthcare visit (other): Neurologist, primary care and acupuncture

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-06-12
Report sent to call center — 3 months, dose 2
Get care from a doctor or other healthcare professional

1 call case(s)
2021-06-17
Call successful
Does not wish to fill out VAERS report
2021-09-11
Health check-in — 6 months, dose 2
Feeling: Good

Adult check-in

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-02-20	Pfizer-BioNTech
2	2021-03-13	Pfizer-BioNTech

Call center

Reported	Outcome	VAERS-related outcome
2021-03-06	Successful	Does not wish to fill out VAERS report
2021-04-24	Successful	Does not wish to fill out VAERS report
2021-06-12	Successful 2021-06-17	Does not wish to fill out VAERS report

Free text

Release 4 — days 1–6 daily, dose 1

2021-02-23

Systemic reaction (other): Muscle twitches - mild

2021-02-24

Systemic reaction (other): Mild muscle spasms at night

Release 5 — day 14, dose 1

2021-03-06

Symptoms: Muscles spasms.

Release 5 — days 1–6 daily, dose 2

2021-03-16

Systemic reaction (other): Muscle twitches, insomnia, pain from my lymph node under my arm.

2021-03-17

Systemic reaction (other): Swollen sore lymph node and muscle twitches throughout body

2021-03-18

Systemic reaction (other): Muscle twitches

Release 6 — day 7, dose 2

2021-03-20

Systemic reaction (other): Muscle shakes

Release 7 — day 42, dose 2

2021-04-24

Symptoms: Twitches and jerks. Had to see a neurologist.

Release 9 — 3 months, dose 2

2021-06-12

Symptoms: Random internal tremors, muscle twitches and spasms, elevated liver enzymes. Always were normal previously.

Healthcare visit (other): Neurologist, primary care and acupuncture

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
HCVO	Office visit	✓	✓	✓
SD	Dyskinesia	✓	✓	✓
SD	Hepatic enzyme abnormal	✓	✓	✓
SD	Muscle spasms	✓	✓	✓
SD	Muscle twitching	✓	✓	✓
SD	Office visit	✓	✓	✓
SD	Tremor	✓	✓	✓
SRO	Insomnia	✓	✓	✓
SRO	Lymph node pain	✓	✓	✓
SRO	Lymphadenopathy	✓	✓	✓
SRO	Muscle spasms	✓	✓	✓
SRO	Muscle twitching	✓	✓	✓
SRO	Myalgia	✓	✓	✓

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