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Timeline

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

2021-03-29
Dose 1 — Pfizer-BioNTech
2021-04-22
Dose 2 — Pfizer-BioNTech
2021-04-23
Registered in v-safe
2021-04-24
Health check-in — days 1–6 daily, dose 2
Feeling: Good · None

Adult check-in
2021-04-25
Survey response — days 1–6 daily, dose 2
MedDRA: Lymphadenopathy — Feeling: Good

Free text: Swollen lymph node under armpit on side where shot was given

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-06-03
Health check-in — day 42, dose 2
Feeling: Good

Adult check-in
2021-07-22
Survey response — 3 months, dose 2
MedDRA: Lymphadenopathy — Feeling: Fair

Free text: Swollen lymph node under left armpit has been there since I got second dose over 2 months ago.

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

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-03-29	Pfizer-BioNTech
2	2021-04-22	Pfizer-BioNTech

Free text

Release 7 — days 1–6 daily, dose 2

2021-04-25

Systemic reaction (other): Swollen lymph node under armpit on side where shot was given

Release 9 — 3 months, dose 2

2021-07-22

Symptoms: Swollen lymph node under left armpit has been there since I got second dose over 2 months ago.

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	Lymphadenopathy	·	·	✓
SRO	Lymphadenopathy	✓	✓	✓

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