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Timeline

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

2021-04-02
Dose 1 — Moderna
2021-04-03
Registered in v-safe
2021-04-03
Survey response — days 1–6 daily, dose 1
MedDRA: Feeling cold, Nausea — Feeling: Good · Site: Pain

Free text: When outside, I feel the chill with the same outerwear I normally wear. Felt slightly nauseous early afternoon but only lasted 10 min or so.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-04
Health check-in — days 1–6 daily, dose 1
Feeling: Good · Site: Pain · None

Adult check-in
2021-04-05
Survey response — days 1–6 daily, dose 1
MedDRA: Chills, Headache — Feeling: Good · Site: Pain

Free text: Short period of time felt slight headache coming on, but it dissipated. Have had occasional feeling of chill a couple times yesterday and a very short period today, but it leaves very quickly - would not consider this under chills though.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-06
Survey response — days 1–6 daily, dose 1
MedDRA: Injection site pain — Feeling: Good

Free text: Very slight soreness at injection site, nearly gone.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-07
Survey response — days 1–6 daily, dose 1
MedDRA: Pain — Feeling: Good

Free text: Any slight soreness about gone.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-08
Health check-in — days 1–6 daily, dose 1
Feeling: Good · None

Adult check-in
2021-04-09
Health check-in — day 7, dose 1
Feeling: Good · None

Adult check-in
2021-04-16
Health check-in — day 14, dose 1
Feeling: Good

Adult check-in
2021-04-23
Health check-in — day 21, dose 1
Feeling: Good

Adult check-in
2021-04-30
Dose 2 — Moderna
2021-05-01
Health check-in — days 1–6 daily, dose 2
Feeling: Poor · Site: Pain · Fever · Chills, Headache, Joint pains, Muscle or body aches, Fatigue or tiredness · Be unable to do your normal daily activities

Adult check-in
2021-05-02
Health check-in — days 1–6 daily, dose 2
Feeling: Fair · Site: Pain · Headache, Fatigue or tiredness

Adult check-in
2021-05-04
Health check-in — days 1–6 daily, dose 2
Feeling: Good · Site: Pain · Headache

Adult check-in
2021-05-05
Health check-in — days 1–6 daily, dose 2
Feeling: Good · Site: Pain · Headache, Joint pains, Muscle or body aches

Adult check-in
2021-05-06
Health check-in — days 1–6 daily, dose 2
Feeling: Good · Site: Pain · Headache, Joint pains, Muscle or body aches

Adult check-in
2021-05-07
Health check-in — day 7, dose 2
Feeling: Good · Headache, Joint pains, Muscle or body aches, Fatigue or tiredness

Adult check-in
2021-05-14
Health check-in — day 14, dose 2
Feeling: Good

Adult check-in
2021-05-21
Health check-in — day 21, dose 2
Feeling: Good

Adult check-in
2021-05-28
Survey response — day 28, dose 2
MedDRA: Blood potassium decreased, Dehydration, Office visit, Pain in extremity — Feeling: Fair · Get care from a doctor or other healthcare professional · Emergency room or emergency department visit

Free text: Symptoms: My last symptom since vaccine #2 to resolve itself has been aching legs, which recently intensified with a dehydration/lowered potassium episode. · Healthcare visit (other): And follow-up with PCP

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-05-28
Report sent to call center — day 28, dose 2
Get care from a doctor or other healthcare professional

1 call case(s)
2021-06-04
Health check-in — day 35, dose 2
Feeling: Fair

Adult check-in
2021-06-11
Health check-in — day 42, dose 2
Feeling: Good

Adult check-in
2021-08-02
Health check-in — 3 months, dose 2
Feeling: Good

Adult check-in
2021-10-31
Health check-in — 6 months, dose 2
Feeling: Fair

Adult check-in
2022-02-14
Call successful
Participant prefers to complete VAERS report online

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-04-02	Moderna
2	2021-04-30	Moderna

Call center

1 call center case

1 successful

See the call center timeline

Free text

Release 6 — days 1–6 daily, dose 1

2021-04-03

Systemic reaction (other): When outside, I feel the chill with the same outerwear I normally wear. Felt slightly nauseous early afternoon but only lasted 10 min or so.

2021-04-05

Systemic reaction (other): Short period of time felt slight headache coming on, but it dissipated. Have had occasional feeling of chill a couple times yesterday and a very short period today, but it leaves very quickly - would not consider this under chills though.

Release 7 — days 1–6 daily, dose 1

2021-04-06

Systemic reaction (other): Very slight soreness at injection site, nearly gone.

2021-04-07

Systemic reaction (other): Any slight soreness about gone.

Release 8 — day 28, dose 2

2021-05-28

Symptoms: My last symptom since vaccine #2 to resolve itself has been aching legs, which recently intensified with a dehydration/lowered potassium episode.

Healthcare visit (other): And follow-up with PCP

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	Blood potassium decreased	✓	✓	✓
SD	Dehydration	✓	✓	✓
SD	Pain in extremity	✓	✓	✓
SRO	Chills	✓	✓	✓
SRO	Feeling cold	✓	✓	✓
SRO	Headache	✓	✓	✓
SRO	Injection site pain	✓	✓	✓
SRO	Nausea	✓	✓	✓
SRO	Pain	✓	✓	✓

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