3T3-33056-44470 · OpenVSafe

Timeline

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

2021-04-22
Dose 1 — Moderna
2021-04-26
Registered in v-safe
2021-04-26
Survey response — days 1–6 daily, dose 1
MedDRA: Exposure via breast milk, Mastitis — Feeling: Poor · Site: Pain · Fever · Headache, Muscle or body aches, Fatigue or tiredness, Rash, not including the immediate area around the injection site · Be unable to do your normal daily activities

Free text: Clogged milk ducts, started on same side as shot within 3 hours of getting shot. Now on other side as well, likely turning in to mastitis.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-27
Survey response — days 1–6 daily, dose 1
MedDRA: Mastitis — Feeling: Fair · Fever · Chills, Headache, Joint pains, Muscle or body aches, Fatigue or tiredness, Rash, not including the immediate area around the injection site · Be unable to do your normal daily activities, Get care from a doctor or other healthcare professional · Telehealth, virtual health, or email health consultation

Free text: Mastitis, right breast

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-27
Report sent to call center — days 1–6 daily, dose 1
Be unable to do your normal daily activities · Get care from a doctor or other healthcare professional

1 call case(s)
2021-04-28
Survey response — days 1–6 daily, dose 1
MedDRA: Breast pain, Mastitis — Feeling: Fair · Fatigue or tiredness

Free text: Breast pain/ clogged duct - but mastitis is resolving.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-29
Health check-in — day 7, dose 1
Feeling: Good · Muscle or body aches, Fatigue or tiredness

Adult check-in
2021-05-06
Health check-in — day 14, dose 1
Feeling: Good

Adult check-in
2021-05-13
Survey response — day 21, dose 1
MedDRA: Breast feeding, Galactostasis, Lactation insufficiency — Feeling: Fair · Be unable to do your normal daily activities

Free text: Clogged milk ducts, reduced breast milk supply (I am 6 months postpartum and breastfeeding via exclusively pumping- I am extremely aware of how much milk I produce for my baby each day).

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-05-20
Dose 2 — Moderna
2021-05-20
Health check-in — day 0, dose 2
Feeling: Good · Site: Pain, Itching · None

Adult check-in
2021-05-21
Health check-in — days 1–6 daily, dose 2
Feeling: Fair · Site: Pain, Itching · Headache, Joint pains, Muscle or body aches, Fatigue or tiredness

Adult check-in
2021-05-22
Health check-in — days 1–6 daily, dose 2
Feeling: Good · Site: Pain · Joint pains, Muscle or body aches, Fatigue or tiredness

Adult check-in
2021-05-23
Health check-in — days 1–6 daily, dose 2
Feeling: Good · Muscle or body aches, Fatigue or tiredness

Adult check-in
2021-05-24
Health check-in — days 1–6 daily, dose 2
Feeling: Good · Muscle or body aches, Fatigue or tiredness

Adult check-in
2021-05-25
Health check-in — days 1–6 daily, dose 2
Feeling: Good · Joint pains

Adult check-in
2021-05-26
Health check-in — days 1–6 daily, dose 2
Feeling: Good · None

Adult check-in
2021-05-27
Health check-in — day 7, dose 2
Feeling: Good · None

Adult check-in
2021-06-03
Health check-in — day 14, dose 2
Feeling: Good

Adult check-in
2021-06-10
Health check-in — day 21, dose 2
Feeling: Good

Adult check-in
2021-06-17
Health check-in — day 28, dose 2
Feeling: Good

Adult check-in
2021-06-24
Health check-in — day 35, dose 2
Feeling: Good

Adult check-in
2021-07-03
Health check-in — day 42, dose 2
Feeling: Good

Adult check-in
2021-08-19
Health check-in — 3 months, dose 2
Feeling: Good

Adult check-in
2021-11-18
Health check-in — 6 months, dose 2
Feeling: Good

Adult check-in
2022-04-07
Call successful
Participant prefers to complete VAERS report online
2022-05-20
Health check-in — 12 months, dose 2
Feeling: Good

Adult check-in

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-04-22	Moderna
2	2021-05-20	Moderna

Call center

1 call center case

1 successful

See the call center timeline

Free text

Release 8 — days 1–6 daily, dose 1

2021-04-26

Systemic reaction (other): Clogged milk ducts, started on same side as shot within 3 hours of getting shot. Now on other side as well, likely turning in to mastitis.

2021-04-27

Systemic reaction (other): Mastitis, right breast

2021-04-28

Systemic reaction (other): Breast pain/ clogged duct - but mastitis is resolving.

Release 8 — day 21, dose 1

2021-05-13

Symptoms: Clogged milk ducts, reduced breast milk supply (I am 6 months postpartum and breastfeeding via exclusively pumping- I am extremely aware of how much milk I produce for my baby each day).

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	Breast feeding	✓	✓	✓
SD	Galactostasis	✓	✓	✓
SD	Lactation insufficiency	✓	✓	✓
SRO	Breast pain	✓	✓	✓
SRO	Exposure via breast milk	✓	✓	✓
SRO	Mastitis	✓	✓	✓

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