276-28009-39543 · OpenVSafe

Timeline

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2021-04-23
Dose 1 — Pfizer-BioNTech
2021-04-24
Registered in v-safe
2021-04-28
Survey response — days 1–6 daily, dose 1
MedDRA: Back pain, Groin pain, Loss of personal independence in daily activities, Mobility decreased — Feeling: Poor · Muscle or body aches · Be unable to do your normal daily activities

Free text: Sever groin pain starting midday yesterday (4/27) and consuming through today (4/28). The pain was/is so severe I am unable to walk without supporting myself (with both hands) against the nearest wall or railing. Today the groin pain is also joined by an almost equally severe pain in my middle back area (left side ). I limit my walkin the time only necessary activities such as eating or bathroom breaks. Sitting and/or lying down is my only source of relief. I have not done any unusual physical activities or over-exerted myself in any way in the past few weeks. I am not finding these specific symptoms being linked to the Pfizer vaccine online, but I can think of no other reason why Id be experiencing such discomfort.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-30
Health check-in — day 7, dose 1
Feeling: Fair · Muscle or body aches · Be unable to do your normal daily activities

Adult check-in
2021-05-09
Health check-in — day 14, dose 1
Feeling: Good

Adult check-in
2021-10-24
Health check-in — 6 months, dose 1
Feeling: Good

Adult check-in

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-04-23	Pfizer-BioNTech

Free text

Release 8 — days 1–6 daily, dose 1

2021-04-28

Systemic reaction (other): Sever groin pain starting midday yesterday (4/27) and consuming through today (4/28). The pain was/is so severe I am unable to walk without supporting myself (with both hands) against the nearest wall or railing. Today the groin pain is also joined by an almost equally severe pain in my middle back area (left side ). I limit my walkin the time only necessary activities such as eating or bathroom breaks. Sitting and/or lying down is my only source of relief. I have not done any unusual physical activities or over-exerted myself in any way in the past few weeks. I am not finding these specific symptoms being linked to the Pfizer vaccine online, but I can think of no other reason why Id be experiencing such discomfort.

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	Back pain	✓	✓	✓
SRO	Groin pain	✓	✓	✓
SRO	Loss of personal independence in daily activities	✓	✓	✓
SRO	Mobility decreased	✓	✓	✓

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