https://www.vaccinewatch.org Analysis, guides, and tools for exploring 1.98 million VAERS vaccine adverse event reports en-us Sun, 10 May 2026 21:07:11 GMT https://www.vaccinewatch.org/analysis/denominator-problem The most critical limitation: raw numbers are meaningless without context. 670+ million COVID doses analyzed. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/analysis/denominator-problem https://www.vaccinewatch.org/analysis/reporting-bias Stimulated reporting, awareness bias, and media influence. 2021 saw a 25x spike in reports. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/analysis/reporting-bias https://www.vaccinewatch.org/analysis/onset-timing Analysis of onset timing patterns. 73% of adverse events occur within 3 days of vaccination. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/analysis/onset-timing https://www.vaccinewatch.org/analysis/dose-comparison Comparing adverse event patterns across doses. Second doses generate 130% more reports. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/analysis/dose-comparison https://www.vaccinewatch.org/analysis/recovery-rates Analysis of recovery status in VAERS reports. 68% indicate recovery, but context is essential. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/analysis/recovery-rates https://www.vaccinewatch.org/analysis/lot-analysis Why lot analysis is misleading without context. 4,414 COVID lots analyzed with heavy disclaimers. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/analysis/lot-analysis https://www.vaccinewatch.org/analysis/multi-vaccine Co-administration patterns and safety. 1,514 vaccine combinations reflecting standard practice. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/analysis/multi-vaccine https://www.vaccinewatch.org/analysis/birth-defects Prenatal vaccination analysis. 41 vaccines with reports, but 3-4% background rate provides context. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/analysis/birth-defects https://www.vaccinewatch.org/analysis/hospital-stays Hospitalization duration patterns. 72% of stays last 3 days or fewer. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/analysis/hospital-stays https://www.vaccinewatch.org/analysis/who-reports Understanding reporting sources. Private practice dominates, reflecting vaccination patterns. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/analysis/who-reports https://www.vaccinewatch.org/analysis/covid-impact How the pandemic changed vaccine adverse event reporting forever. 768,706 reports in 2021 alone. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/analysis/covid-impact https://www.vaccinewatch.org/analysis/age-patterns Who reports the most, and who has the most serious outcomes? Adults 65+ account for 56% of death reports. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/analysis/age-patterns https://www.vaccinewatch.org/analysis/gender-patterns Why 59% of VAERS reports come from women — exploring gender patterns in adverse event reporting. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/analysis/gender-patterns https://www.vaccinewatch.org/analysis/reporting-trends From 2,214 reports in 1990 to the COVID-era surge and return to baseline. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/analysis/reporting-trends https://www.vaccinewatch.org/analysis/myocarditis Understanding the most closely-watched vaccine safety signal. 5,540 reports with COVID-19 vaccines dominant. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/analysis/myocarditis https://www.vaccinewatch.org/analysis/death-reports What "death reported to VAERS" actually means — and doesn't mean. 27,732 reports over 35 years. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/analysis/death-reports https://www.vaccinewatch.org/analysis/top-symptoms The 20 most commonly reported adverse symptoms. Pyrexia (fever) leads with 276,779 reports. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/analysis/top-symptoms https://www.vaccinewatch.org/analysis/pediatric Analysis of vaccine adverse events in children under 18. Childhood vaccination schedules in context. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/analysis/pediatric https://www.vaccinewatch.org/analysis/elderly Analysis of vaccine adverse events in adults 65+. Higher background mortality rates require context. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/analysis/elderly https://www.vaccinewatch.org/analysis/covid-vs-flu Side-by-side comparison of COVID-19 and influenza vaccine reports with dose-adjusted context. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/analysis/covid-vs-flu https://www.vaccinewatch.org/analysis/manufacturer-landscape Which manufacturers produce the most-reported vaccines and how market share affects report counts. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/analysis/manufacturer-landscape https://www.vaccinewatch.org/analysis/geographic-patterns State-by-state analysis of reporting rates and population-adjusted patterns. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/analysis/geographic-patterns https://www.vaccinewatch.org/analysis/serious-outcomes Understanding the spectrum of adverse event severity in VAERS reports. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/analysis/serious-outcomes https://www.vaccinewatch.org/dashboard Interactive sortable table of all 104 vaccines with death rates, hospitalization rates, and more. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/dashboard https://www.vaccinewatch.org/side-effects Comprehensive guide to reported vaccine side effects across all 104 vaccines in VAERS. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/side-effects https://www.vaccinewatch.org/side-effects/covid 1.1M+ COVID vaccine adverse event reports analyzed with manufacturer breakdown and context. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/side-effects/covid https://www.vaccinewatch.org/side-effects/flu All flu vaccine types analyzed: trivalent, quadrivalent, nasal, adjuvanted, and more. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/side-effects/flu https://www.vaccinewatch.org/side-effects/mmr Measles, mumps, rubella vaccine data from VAERS with autism myth context. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/side-effects/mmr https://www.vaccinewatch.org/side-effects/hpv Gardasil VAERS data including fainting context and version comparisons. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/side-effects/hpv https://www.vaccinewatch.org/side-effects/shingles Zostavax and Shingrix VAERS data with strong reactogenicity context. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/side-effects/shingles https://www.vaccinewatch.org/vaccine-deaths Analysis of 27,732 death reports with critical context about background mortality. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/vaccine-deaths https://www.vaccinewatch.org/myocarditis Confirmed rare side effect of mRNA COVID vaccines — risk factors, outcomes, and data. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/myocarditis https://www.vaccinewatch.org/is-vaers-reliable Honest assessment of VAERS strengths and limitations for vaccine safety monitoring. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/is-vaers-reliable https://www.vaccinewatch.org/vaccine-schedule Recommended vaccine schedule with links to VAERS adverse event data for each vaccine. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/vaccine-schedule https://www.vaccinewatch.org/vaers-database 1.98M vaccine adverse event reports made searchable and understandable. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/vaers-database https://www.vaccinewatch.org/side-effects/tdap Tetanus, diphtheria, pertussis vaccine VAERS data with pregnancy context. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/side-effects/tdap https://www.vaccinewatch.org/side-effects/hepatitis-b Engerix-B VAERS data — given at birth, 73K+ reports analyzed. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/side-effects/hepatitis-b https://www.vaccinewatch.org/side-effects/pneumonia Pneumovax and Prevnar VAERS data covering all pneumococcal vaccine types. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/side-effects/pneumonia https://www.vaccinewatch.org/side-effects/polio IPV and historical OPV VAERS data with polio eradication context. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/side-effects/polio https://www.vaccinewatch.org/side-effects/varicella Varivax VAERS data: 93K+ reports with MMRV comparison. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/side-effects/varicella https://www.vaccinewatch.org/side-effects/dtap Childhood diphtheria, tetanus, pertussis vaccine — DTaP vs DTP history. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/side-effects/dtap https://www.vaccinewatch.org/side-effects/hepatitis-a Havrix and Vaqta VAERS data — 48K+ reports analyzed. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/side-effects/hepatitis-a https://www.vaccinewatch.org/side-effects/meningococcal Menactra and Menveo VAERS data covering MenACWY and MenB vaccines. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/side-effects/meningococcal https://www.vaccinewatch.org/side-effects/rotavirus RotaTeq and Rotarix VAERS data with intussusception context. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/side-effects/rotavirus https://www.vaccinewatch.org/vaccine-safety A data-driven look at vaccine safety through 1.98 million VAERS reports. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/vaccine-safety https://www.vaccinewatch.org/adverse-events Explore 1.98 million vaccine adverse event reports. What are adverse events, how they're reported, and what the data shows. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/adverse-events https://www.vaccinewatch.org/report-adverse-event Step-by-step guide to reporting a vaccine adverse event. Who can report, what to include, and what happens after. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/report-adverse-event https://www.vaccinewatch.org/vaccine-safety-timeline Major vaccine safety events from 1955 to 2026. From the Cutter Incident to COVID-19 myocarditis detection. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/vaccine-safety-timeline https://www.vaccinewatch.org/vaccine-injuries Understanding vaccine injuries: VAERS data, the Vaccine Injury Compensation Program, and serious reactions. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/vaccine-injuries https://www.vaccinewatch.org/allergic-reaction Understanding vaccine allergic reactions from mild hives to anaphylaxis. VAERS data, risk factors, and what to do. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/allergic-reaction https://www.vaccinewatch.org/fever-after-vaccination Fever is the #1 reported symptom in VAERS. When post-vaccination fever is normal, when to worry, and what the data shows. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/fever-after-vaccination https://www.vaccinewatch.org/guillain-barre Understanding the link between GBS and vaccines. VAERS data, established risk from flu and J&J vaccines, and clinical outcomes. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/guillain-barre https://www.vaccinewatch.org/how-to-search-vaers A complete guide to searching and exploring VAERS data using VaccineWatch tools. Wed, 25 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/how-to-search-vaers https://www.vaccinewatch.org/tools/reporting-rates Calculate adverse event reporting rates per million doses administered. CDC dose denominator estimates for 16 major vaccine types. Thu, 26 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/tools/reporting-rates https://www.vaccinewatch.org/tools/signal-detection FDA-style Proportional Reporting Ratio analysis across 1.98M VAERS reports. 5,225 safety signals detected across 30 vaccines. Thu, 26 Feb 2026 00:00:00 GMT https://www.vaccinewatch.org/tools/signal-detection