Lot number lookup
Tdap / DTaP vaccine lot number lookup
349 tdap / dtap vaccine lots with VAERS reports · 10,461 reports · 1,839 serious · 9 with a death outcome · manufacturers: Glaxosmithkline Biologicals, Mass. Pub Hlth Biol Lab, Sanofi Pasteur
Tdap / DTaP vaccine lots ranked by VAERS report count
Top 60 of 349 lots. Click a lot to open it in the lot explorer (symptom mix, timeline, reporting rate where a denominator exists).
| Lot | Manufacturer | Reports | Serious | Deaths | Doses (known) | Reports / M doses | First → last report |
|---|---|---|---|---|---|---|---|
| 34MF9 | DTAPIPV — Glaxosmithkline Biologicals | 101 | 1 | – | – | – | 2023-09-29 → 2024-12-25 |
| 2KL4K | DTAPIPV — Glaxosmithkline Biologicals | 81 | – | – | – | – | 2022-07-09 → 2024-05-08 |
| G9N2M | DTAPIPV — Glaxosmithkline Biologicals | 78 | – | – | – | – | 2022-11-03 → 2024-07-29 |
| 7P5J5 | DTAPIPV — Glaxosmithkline Biologicals | 77 | – | – | – | – | 2020-11-20 → 2023-05-16 |
| H9FM5 | DTAPIPV — Glaxosmithkline Biologicals | 74 | – | – | – | – | 2021-11-06 → 2023-11-09 |
| 7KM94 | DTaP — Glaxosmithkline Biologicals | 64 | – | – | – | – | 2022-04-04 → 2024-11-07 |
| 5H95B | DTAPIPV — Glaxosmithkline Biologicals | 63 | 1 | – | – | – | 2023-12-28 → 2024-12-02 |
| U4612AA | Tdap — Sanofi Pasteur | 63 | 9 | – | – | – | 2013-04-30 → 2019-12-24 |
| C2730AA | Tdap — Sanofi Pasteur | 62 | 24 | – | – | – | 2007-03-29 → 2008-06-25 |
| C2491AA | Tdap — Sanofi Pasteur | 59 | 23 | – | – | – | 2006-06-13 → 2008-05-13 |
| C2340AA | Tdap — Sanofi Pasteur | 58 | 13 | – | – | – | 2006-01-09 → 2007-10-18 |
| C2734AA | Tdap — Sanofi Pasteur | 58 | 20 | – | – | – | 2007-05-25 → 2009-07-20 |
| U7183AA | Td — Sanofi Pasteur | 57 | – | – | – | – | 2022-05-06 → 2024-10-23 |
| 24T2N | DTAPIPV — Glaxosmithkline Biologicals | 56 | – | – | – | – | 2021-09-08 → 2023-06-30 |
| D24G7 | DTAPIPV — Glaxosmithkline Biologicals | 56 | – | – | – | – | 2020-09-21 → 2022-12-16 |
| HB7L7 | DTAPIPV — Glaxosmithkline Biologicals | 56 | 1 | – | – | – | 2019-08-19 → 2022-10-28 |
| C5248AA | DTAPIPV — Sanofi Pasteur | 54 | 1 | – | – | – | 2017-08-07 → 2019-12-04 |
| 7EC55 | DTaP — Glaxosmithkline Biologicals | 53 | 1 | – | – | – | 2021-06-30 → 2023-05-29 |
| E2L54 | DTAPIPV — Glaxosmithkline Biologicals | 53 | – | – | – | – | 2021-10-04 → 2023-05-03 |
| H99J7 | DTAPIPV — Glaxosmithkline Biologicals | 52 | – | – | – | – | 2022-04-02 → 2024-05-06 |
| C2631AA | Tdap — Sanofi Pasteur | 51 | 17 | – | – | – | 2007-01-08 → 2010-08-12 |
| C5367AA | DTaP — Sanofi Pasteur | 51 | – | – | – | – | 2019-03-15 → 2021-01-14 |
| C5893AA | DTaP — Sanofi Pasteur | 51 | – | – | – | – | 2022-09-16 → 2024-01-16 |
| C2456AA | Tdap — Sanofi Pasteur | 50 | 22 | – | – | – | 2006-05-04 → 2011-11-21 |
| 49TM3 | DTaP — Glaxosmithkline Biologicals | 49 | – | – | – | – | 2020-10-08 → 2022-08-06 |
| U7526AA | DTAPIPV — Sanofi Pasteur | 49 | – | – | – | – | 2022-06-27 → 2024-06-25 |
| A146A | Td — Mass. Pub Hlth Biol Lab | 48 | – | – | – | – | 2024-02-12 → 2024-11-06 |
| C2610AA | Tdap — Sanofi Pasteur | 48 | 17 | – | – | – | 2007-03-16 → 2009-09-15 |
| C2457AA | Tdap — Sanofi Pasteur | 47 | 16 | – | – | – | 2006-05-10 → 2009-01-07 |
| C2688AA | Tdap — Sanofi Pasteur | 47 | 19 | – | – | – | 2007-01-11 → 2008-08-14 |
| C2771AA | Tdap — Sanofi Pasteur | 47 | 12 | – | – | – | 2007-08-05 → 2008-08-29 |
| C5656AA | DTAPIPV — Sanofi Pasteur | 47 | 1 | – | – | – | 2019-07-30 → 2021-10-19 |
| F5492 | DTAPIPV — Glaxosmithkline Biologicals | 47 | – | – | – | – | 2023-02-28 → 2024-12-23 |
| YZ97N | DTAPIPV — Glaxosmithkline Biologicals | 47 | – | – | – | – | 2020-10-02 → 2022-11-26 |
| C2556AA | Tdap — Sanofi Pasteur | 46 | 17 | – | – | – | 2006-07-24 → 2010-07-21 |
| Y4259 | DTaP — Glaxosmithkline Biologicals | 46 | – | – | – | – | 2022-08-03 → 2024-03-29 |
| 7C9NJ | DTaP — Glaxosmithkline Biologicals | 45 | – | – | – | – | 2023-04-28 → 2024-12-20 |
| C2632AA | Tdap — Sanofi Pasteur | 45 | 16 | – | – | – | 2007-03-12 → 2009-07-21 |
| T343J | DTAPIPV — Glaxosmithkline Biologicals | 45 | – | – | – | – | 2023-06-28 → 2024-12-30 |
| C2455AA | Tdap — Sanofi Pasteur | 44 | 16 | – | – | – | 2006-04-20 → 2016-03-08 |
| C2720AA | Tdap — Sanofi Pasteur | 44 | 18 | – | – | – | 2007-02-26 → 2010-08-19 |
| PT2RK | DTaP — Glaxosmithkline Biologicals | 44 | 5 | – | – | – | 2017-04-26 → 2023-07-07 |
| U4421AA | Tdap — Sanofi Pasteur | 44 | 19 | – | – | – | 2012-10-05 → 2015-08-10 |
| C2559AA | Tdap — Sanofi Pasteur | 43 | 20 | – | – | – | 2006-08-04 → 2009-06-10 |
| C2731AA | Tdap — Sanofi Pasteur | 43 | 12 | – | – | – | 2007-05-14 → 2008-08-07 |
| C2758AA | Tdap — Sanofi Pasteur | 43 | 12 | – | – | – | 2007-06-13 → 2008-10-06 |
| U4586AA | Tdap — Sanofi Pasteur | 42 | 9 | – | – | – | 2013-01-30 → 2017-01-12 |
| U5318AA | Tdap — Sanofi Pasteur | 42 | 8 | – | – | – | 2016-01-28 → 2018-05-11 |
| C2557AA | Tdap — Sanofi Pasteur | 41 | 6 | – | – | – | 2006-08-04 → 2008-07-22 |
| C2769AA | Tdap — Sanofi Pasteur | 40 | 16 | – | – | – | 2007-07-18 → 2009-02-18 |
| C2609AA | Tdap — Sanofi Pasteur | 39 | 8 | – | – | – | 2006-10-16 → 2009-07-08 |
| C2689AA | Tdap — Sanofi Pasteur | 39 | 13 | – | – | – | 2007-01-04 → 2008-05-19 |
| U4875AA | Tdap — Sanofi Pasteur | 39 | 18 | – | – | – | 2014-05-27 → 2016-04-19 |
| C2384AA | Tdap — Sanofi Pasteur | 38 | 15 | – | – | – | 2006-01-10 → 2016-08-01 |
| C2644AA | Tdap — Sanofi Pasteur | 38 | 10 | – | – | – | 2007-01-30 → 2009-07-14 |
| C2899AA | Tdap — Sanofi Pasteur | 38 | 12 | – | – | – | 2008-04-28 → 2021-02-18 |
| C3248AA | Tdap — Sanofi Pasteur | 38 | 16 | – | – | – | 2009-06-23 → 2010-08-20 |
| C3486AA | Tdap — Sanofi Pasteur | 38 | 18 | 1 | – | – | 2010-08-03 → 2012-07-09 |
| C5970AA | DTAPIPV — Sanofi Pasteur | 38 | – | – | – | – | 2022-02-16 → 2024-02-22 |
| PP9L5 | DTAPIPV — Glaxosmithkline Biologicals | 38 | – | – | – | – | 2019-08-19 → 2024-10-08 |
Common questions
How do I find my tdap / dtap vaccine lot number?
The lot (batch) number is printed on your vaccination record card, on the vial or prefilled syringe label, and in your clinic's immunization record or state registry printout. It is usually 5–8 characters, letters and numbers.
What does a high report count for a tdap / dtap vaccine lot mean?
Mostly that the lot was large or widely distributed, or shipped during a period of intense reporting. VAERS counts have no denominator unless shipment data is known, so a lot with more reports is not shown to be more harmful; compare the per-million-doses column where available and read the lot explorer's caveats.
Does a VAERS report mean the vaccine caused the event?
No. VAERS accepts any report from anyone; it is a signal-detection system, not a causal record. Reports are unverified and incomplete, and the same event can be reported more than once.
Related
Source: VAERS public data via the site's lot index (tools/apply_product_shell.py); shipment denominators where published. Generated 2026-10-08. Not medical advice.