Suzanne Humphries on polio: what the evidence says · JRE #2294
SUBJECT: POLIO
Not a true/false call. Every claim is logged with its sources; read the exhibits below.
And what they found was 98 to 99% of every person they tested, and it was hundreds of people, had evidence of immunity to all three strains of polio. And they said to them, well, where are all your crippled children? Where's your short legs? Where are the people that died of respiratory failure? And they were like, we don't have any of that problem.
What the evidence says 01 / RECORD
The underlying study is real: Neel, Salzano and colleagues surveyed the Xavante of Brazil's Mato Grosso and reported widespread serological evidence of past infection (including poliovirus antibodies) in a population with high immunological resistance and no epidemic of paralytic disease, though the published clinical examination covered on the order of dozens of individuals rather than the hundreds Humphries describes. The pattern of near-universal polio antibodies with almost no visible paralysis is exactly what epidemiology predicts and does not imply the virus is harmless: the WHO notes that only about 1 in 200 poliovirus infections leads to irreversible paralysis, so a fully exposed group can be near-100 percent seropositive while showing very few paralytic cases. Humphries's specific figures (98 to 99 percent, hundreds tested) and the dramatized dialogue are not supported by the primary literature, and the rhetorical framing (implying the absence of crippled children shows polio does not cause paralysis) is misleading because the low paralysis rate per infection, not any lack of the virus's danger, explains the observation.