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Data source: VAERS (Vaccine Adverse Event Reporting System)

Data through 2026 · Updated quarterly

Built by TheDataProject.ai · © 2026 VaccineWatch

Important: VAERS accepts reports of adverse events following vaccination. For any given report, there is no certainty that the reported event was caused by the vaccine. Reports may contain information that is incomplete, inaccurate, coincidental, or unverifiable. Most reports to VAERS are voluntary, which means they are subject to biases. This data cannot be used to determine if vaccines cause or contribute to adverse events.

⚠️

Important: VAERS reports alone cannot determine if a vaccine caused an adverse event. Reports may contain incomplete, inaccurate, or unverified information. Correlation does not equal causation.

  1. Home
  2. Vaccines
  3. Measles

Measles

MEA729 total reports
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Manufacturers:

Merck & Co.Unknown Manufacturer

Measles has 729 reports in VAERS spanning from 1990 to 2026. Of these reports, 14 mentioned death, 77 involved hospitalization, and 275 required emergency department visits. This vaccine is manufactured by: Merck & Co., Unknown Manufacturer. This vaccine accounts for 0.0% of all 1,983,260 reports in the VAERS database.

729
Total Reports
14
Deaths
77
Hospitalizations
275
ER Visits
43
Disabilities

About Measles

Measles has 729 reports in VAERS spanning from 1990 to 2026.

Of these reports, 14 mentioned death, 77 involved hospitalization, and 275 required emergency department visits.

This vaccine is manufactured by: Merck & Co., Unknown Manufacturer.

This vaccine accounts for 0.0% of all 1,983,260 reports in the VAERS database.

Reporting Rate

This vaccine averages 23 reports per year over 32 years of reporting (1990–2025).

Understanding These Numbers

•Reports don't prove causation. They represent temporal associations where someone experienced an event after vaccination.
•Background rates matter. Many conditions occur naturally and may coincidentally happen after vaccination.
•Reporting varies by vaccine. Newer vaccines or those in the news may have higher reporting rates due to increased awareness.

Most Reported Symptoms

1. Pyrexia(all)
240
2. Rash(all)
134
3. Drug ineffective(all)
66
4. Headache(all)
51
5. Pruritus(all)
49
6. Myalgia(all)
41
7. Lymphadenopathy(all)
40
8. Infection(all)
37
9. Rash maculo-papular(all)
36
10. Arthralgia(all)
34

Top Reporting States

1. New York118
2. California63
3. Pennsylvania49
4. New Jersey33
5. Texas31
6. Illinois29
7. Florida25
8. Michigan17

Reports by Year

20179
20167
20156
20147
201211
201115
201040
200930
200819
200714

Explore Further

⚖️ Compare MEA with OthersRead Analysis Articles

Related Analysis

The Denominator ProblemUnderstanding Reporting BiasWhen Do Side Effects Start?Death Reports Deep DiveSerious Outcomes AnalysisMost Common Symptoms

Data Source

This data comes from the Vaccine Adverse Event Reporting System (VAERS), jointly managed by CDC and FDA.