VAERS reports by lot

GSK Hepatitis B lot 4F3YY: VAERS reports

62 VAERS reports list lot 4F3YY as a GSK Hepatitis B vaccine, received between 2022-04-26 and 2024-02-08. Data: VAERS public files through 28 May 2026 (site extract 2026-10-28).

Read this first. VAERS accepts reports from anyone, and a report does not establish that the vaccine caused the event. A lot's report count mostly reflects how many doses it contained, when it was used and who received it; no administered-dose counts are published for this lot, so counts are not rates and cannot rank lots against each other. Lot numbers in VAERS reports are typed by reporters and are sometimes wrong.
62
Reports
2%
Marked serious
0
With a death outcome
16
Months with reports

Symptom categories in these reports

A report can mention several categories, so the counts add up to more than the number of reports.

CategoryCount%
General / Systemic (non-local)422%
Musculoskeletal317%
Dermatological (non-injection-site)317%
Neurological211%
Injection-site / Local reaction211%
Allergic / Anaphylactic16%
Respiratory16%
Gastrointestinal16%
Psychiatric / Neuropsychiatric16%

Where reports came from

U.S. state of the reporter, where given (top 12).

StateReports
Utah5
North Carolina5
Missouri4
Colorado4
Maryland3
Indiana3
Virginia3
Washington3
Georgia3
California3
Massachusetts2
Kansas2

Reports by month received

MonthReportsBar
2022-041
2022-054
2022-064
2022-071
2022-083
2022-091
2022-111
2022-122
2023-0124
2023-0210
2023-035
2023-042
2023-051
2023-061
2024-011
2024-021

Products recorded with this lot

Manufacturer and product as reported in VAERS. Reports listing the lot under more than one product are counted once.

Related

Nearby GSK Hepatitis B lots (A–Z): 2KE55 · 2PG39 · 324BY · 797F9 · AHABB140AA · AZ2A3

Source: VAERS public data (CDC/FDA), grouped by manufacturer and lot by the Open Source Medicine Foundation; extract 2026-10-28 18:08 UTC. Not medical advice. Report errors via contact.