VAERS reports by lot

Merck Varicella/Shingles lot M042850: VAERS reports

22 VAERS reports list lot M042850 as a Merck Varicella/Shingles vaccine, received between 2017-05-12 and 2018-02-23. 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.
22
Reports
18%
Marked serious
0
With a death outcome
9
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 reaction1839%
Dermatological (non-injection-site)1022%
Allergic / Anaphylactic613%
General / Systemic (non-local)613%
Neurological49%
Respiratory12%
Musculoskeletal12%

Where reports came from

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

StateReports
Pennsylvania5
Texas2
Washington2
Illinois2
New York2
Georgia2
Mississippi1
Maryland1
Ohio1
Louisiana1
California1
West Virginia1

Reports by month received

MonthReportsBar
2017-052
2017-064
2017-073
2017-088
2017-101
2017-111
2017-121
2018-011
2018-021

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 Merck Varicella/Shingles lots (A–Z): M041510 · M041511 · M042503 · M042851 · M042858 · M046004

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.