Z4D-16231-56569

VAERS ID	Confidence	Score	Runner-up	Shared symptoms	Dose	State	VAERS vaccinated / onset / received	Call case
2214496 (opens in a new window)	high	9 / 11	3	2 of 11 VAERS symptoms	same dose (1)	IL matches	2021-04-06 / 2021-04-06 / 2022-04-04 received the same day as the last call	case 553697

Timeline

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

2021-04-06
Dose 1 — Pfizer-BioNTech
2021-04-08
Registered in v-safe
2021-04-08
Survey response — days 1–6 daily, dose 1
MedDRA: Arthralgia, Immediate post-injection reaction, Joint swelling, Pain, Rash — Feeling: Good · Site: Pain, Swelling · Rash, not including the immediate area around the injection site

Free text: I got a rash on my neck 45 mins after the shot. Yesterday I was in alot of pain, today I felt better and rash looks better but started noticing slight pain in my upper back shoulder and realized it's very swollen.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-10
Survey response — days 1–6 daily, dose 1
MedDRA: Joint swelling, Pain — Feeling: Fair · Site: Pain, Swelling · Muscle or body aches

Free text: I have swelling on my upper right back shoulder the is the size of a lemon. Im aching in that area and feeling uncomfortable.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-20
Survey response — day 14, dose 1
MedDRA: Mass — Feeling: Fair · Be unable to do your normal daily activities, Get care from a doctor or other healthcare professional · Outpatient clinic or urgent care clinic visit

Free text: I developed a large lump on my upper right back shoulder. It the size of a fist and is causing pain in my shoulder and arm.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-20
Report sent to call center — day 14, dose 1
Be unable to do your normal daily activities · Get care from a doctor or other healthcare professional

1 call case(s)
2021-05-21
Health check-in — day 42, dose 1
Feeling: Fair

Adult check-in
2022-04-04
Call successful
Completed over the phone

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-04-06	Pfizer-BioNTech

Call center

Reported	Outcome	VAERS-related outcome
2021-04-20	Successful 2022-04-04	Completed over the phone

Free text

Release 7 — days 1–6 daily, dose 1

2021-04-08

Systemic reaction (other): I got a rash on my neck 45 mins after the shot. Yesterday I was in alot of pain, today I felt better and rash looks better but started noticing slight pain in my upper back shoulder and realized it's very swollen.

2021-04-10

Systemic reaction (other): I have swelling on my upper right back shoulder the is the size of a lemon. Im aching in that area and feeling uncomfortable.

Release 7 — day 14, dose 1

2021-04-20

Symptoms: I developed a large lump on my upper right back shoulder. It the size of a fist and is causing pain in my shoulder and arm.

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	Mass	✓	✓	✓
SRO	Arthralgia	✓	✓	✓
SRO	Immediate post-injection reaction	✓	✓	✓
SRO	Joint swelling	✓	✓	✓
SRO	Pain	✓	✓	✓
SRO	Rash	✓	✓	✓

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

Possible VAERS report