VAERS reports by lot

Sanofi Pasteur DTaP/Tdap lot U4335AA: VAERS reports

27 VAERS reports list lot U4335AA as a Sanofi Pasteur DTaP/Tdap vaccine, received between 2012-03-22 and 2013-06-07. 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.
27
Reports
30%
Marked serious
0
With a death outcome
11
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 reaction2727%
General / Systemic (non-local)2424%
Musculoskeletal1616%
Neurological1313%
Cardiac / Cardiovascular77%
Dermatological (non-injection-site)55%
Gastrointestinal44%
Allergic / Anaphylactic33%
Respiratory11%

Where reports came from

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

StateReports
California5
Texas5
Washington4
Arizona2
Montana1
Wyoming1
Louisiana1
Idaho1
North Carolina1
Kansas1
Tennessee1
Missouri1

Reports by month received

MonthReportsBar
2012-031
2012-041
2012-052
2012-064
2012-074
2012-084
2012-093
2012-102
2012-114
2012-121
2013-061

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): U3051AA · U4325AA · U4329AA · U4384AA · U4393BA · U4421AA

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.