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the claim
Many vaccine-preventable diseases were almost gone before vaccines were introduced
the verdict
REFUTED
the evidence says no
confidence 0/100

Public health records and historical data show that vaccine-preventable diseases were widely prevalent, causing high numbers of cases and deaths before vaccines were introduced.

Evidence against · 4
cdc.gov: Achievements in Public Health, 1900-1999 Impact of ...
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Shows high numbers of cases for smallpox, measles, diphtheria, and pertussis early in the 20th century before widespread vaccine control.
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More against · 3
cdc.gov: Comparison of 20th Century Annual Morbidity and Current Morbidity, Vaccine-Preventable Diseases (pre-1990 Vaccines)
cited by 0
Lists high pre-vaccine era morbidity estimates that dropped significantly after vaccines were introduced.
ourworldindata.org: Vaccination
cited by 0
States that before vaccines, these infections were common and caused severe illness and death.
cdc.gov: Achievements in Public Health, 1900-1999 Impact of Vaccines Universally Recommended for Children -- United States, 1990-1998
cited by 0
Demonstrates that infectious diseases were widely prevalent and caused massive tolls before vaccines controlled them.
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first checked01 Aug 2026
judged → REFUTED · 001 Aug 2026
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