VAERS reports by lot

Sanofi Pasteur DTaP/Tdap lot U7838AA: VAERS reports

26 VAERS reports list lot U7838AA as a Sanofi Pasteur DTaP/Tdap vaccine, received between 2023-08-10 and 2025-08-18. 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.
26
Reports
0%
Marked serious
0
With a death outcome
13
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%
Injection-site / Local reaction2545%
Dermatological (non-injection-site)1221%
Allergic / Anaphylactic916%
Neurological35%
Psychiatric / Neuropsychiatric35%
Musculoskeletal24%
General / Systemic (non-local)24%

Where reports came from

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

StateReports
Pennsylvania4
Colorado3
Virginia3
Kentucky2
Ohio2
Michigan2
Arizona2
Oregon2
Illinois1
New Jersey1
Florida1
Texas1

Reports by month received

MonthReportsBar
2023-081
2023-092
2024-041
2024-051
2024-081
2024-092
2024-113
2025-011
2025-023
2025-033
2025-064
2025-071
2025-083

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 Sanofi Pasteur DTaP/Tdap lots (A–Z): U7564AA · U7624AA · U7656AA · U7904AA · U7920AA · U7927AA

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.