6EM-32375-48112 · OpenVSafe

Timeline

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

2021-10-17
Dose 1 — Pfizer-BioNTech
2021-10-18
Registered in v-safe
2021-10-18
Survey response — days 1–6 daily, dose 1
MedDRA: Back pain, Muscle twitching — Feeling: Fair · Site: Pain · Fever · Joint pains, Muscle or body aches, Fatigue or tiredness · Be unable to do your normal daily activities

Free text: Arm twitching on same arm of injection (near elbow) and lower back pain

MedDRA releases: 2024-11 · check-in free text available
2021-10-19
Survey response — days 1–6 daily, dose 1
MedDRA: Back pain — Feeling: Good · Site: Pain · Muscle or body aches · Be unable to do your normal daily activities

Free text: Slight lower back pain

MedDRA releases: 2024-11 · check-in free text available
2021-10-21
Health check-in — days 1–6 daily, dose 1
Feeling: Good · None

Adult check-in
2021-10-22
Survey response — days 1–6 daily, dose 1
MedDRA: Abdominal pain upper, Back pain — Feeling: Good · Muscle or body aches

Free text: Unusual lower back pain and belly cramping, similar to menstrual cramps

MedDRA releases: 2024-11 · check-in free text available
2021-10-23
Survey response — days 1–6 daily, dose 1
MedDRA: Back pain, Dysmenorrhoea — Feeling: Good · Muscle or body aches

Free text: Unusual lower back pain and menstrual like cramping in my belly

MedDRA releases: 2024-11 · check-in free text available
2021-10-24
Health check-in — day 7, dose 1
Feeling: Good · None

Adult check-in
2021-10-31
Health check-in — day 14, dose 1
Feeling: Good

Adult check-in
2021-11-07
Survey response — day 21, dose 1
MedDRA: Abdominal pain upper, Amenorrhoea, Back pain — Feeling: Fair

Free text: Besides the back pain and belly cramping, i never got my period,so it is over 2 weeks late. It is not possible for me to be pregnant because I am currently not sexually active

MedDRA releases: 2024-11 · check-in free text available
2021-11-16
Survey response — day 28, dose 1
MedDRA: Cardiac flutter, Heart rate irregular — Feeling: Poor · Be unable to do your normal daily activities, Get care from a doctor or other healthcare professional · Outpatient clinic or urgent care clinic visit, Emergency room or emergency department visit

Free text: I have developed a heart fluttering that is constant every single day, it started two weeks ago. Feels like a very abnormal heart rythm...like heart palpitations, but all day long

MedDRA releases: 2024-11 · check-in free text available
2021-11-16
Report sent to call center — day 28, dose 1
Be unable to do your normal daily activities · Get care from a doctor or other healthcare professional

Outpatient clinic or urgent care clinic visit · Emergency room or emergency department visit · 1 call case(s)
2021-11-17
Call successful
Participant prefers to complete VAERS report online
2021-11-21
Health check-in — day 35, dose 1
Feeling: Fair

Adult check-in
2021-11-28
Health check-in — day 42, dose 1
Feeling: Good

Adult check-in
2022-01-16
Health check-in — 3 months, dose 1
Feeling: Fair

Adult check-in
2022-10-18
Health check-in — 12 months, dose 1
Feeling: Fair

Adult check-in

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-10-17	Pfizer-BioNTech	No

Call center

1 call center case

1 successful

See the call center timeline

Free text

Release 10 — days 1–6 daily, dose 1

2021-10-18

Systemic reaction (other): Arm twitching on same arm of injection (near elbow) and lower back pain

2021-10-19

Systemic reaction (other): Slight lower back pain

2021-10-22

Systemic reaction (other): Unusual lower back pain and belly cramping, similar to menstrual cramps

2021-10-23

Systemic reaction (other): Unusual lower back pain and menstrual like cramping in my belly

Release 10 — day 21, dose 1

2021-11-07

Symptoms: Besides the back pain and belly cramping, i never got my period,so it is over 2 weeks late. It is not possible for me to be pregnant because I am currently not sexually active

Release 10 — day 28, dose 1

2021-11-16

Symptoms: I have developed a heart fluttering that is constant every single day, it started two weeks ago. Feels like a very abnormal heart rythm...like heart palpitations, but all day long

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	Abdominal pain upper	·	·	✓
SD	Amenorrhoea	·	·	✓
SD	Back pain	·	·	✓
SD	Cardiac flutter	·	·	✓
SD	Heart rate irregular	·	·	✓
SRO	Abdominal pain upper	·	·	✓
SRO	Back pain	·	·	✓
SRO	Dysmenorrhoea	·	·	✓
SRO	Muscle twitching	·	·	✓

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