Report #2859143

Received Sep 16, 2025

Office visit

A note on interpretation. VAERS reports are unverified and may be incomplete or coincidental. A report does not establish that a vaccine caused an event, and counts should not be used to calculate incidence or infer causation. Full disclaimer

Overview

Sex: Female
Age: 51 yrs
State: PA
Recovered: Unknown
Vaccinated: Sep 10, 2025
Onset: Sep 10, 2025
Days to onset: 0
Hospital days: —

Vaccines (1)

Type	Name	Manufacturer	Dose	Lot	Route / Site
PNC20	PNEUMO (PREVNAR20)	PFIZER\WYETH	UNK	—	—

Symptoms (3)

Breast massBreast painMastitis

Symptom narrative

My chart says "Pneumococcal conjugate vaccine 20-valent." When I came home at 7pm, approximately 7 hours after receiving the vaccine, I noticed a large, painful lump in my left breast (I received vaccine in left arm). It was diagnosed as mastitis. I am NOT a breastfeeding mother (and never have been). I was put on Augmentin for 10 days. It's significantly better but not all better.

Other medications

Wellbutrin, 350mg; Lexapro 25mg

Allergies

I get hives with Azithromycin