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HEALTH

The Claim

A person infected with hantavirus transmits the virus to an average of three other people.

Verified by Lenz ·

The Short Version

The evidence does not support an average of three secondary infections per hantavirus case. Public-health agencies state that hantaviruses are usually acquired from rodents, not other people, and documented person-to-person spread is limited to Andes virus and is rare. Reports of 3-4 onward infections describe unusual cluster maxima, not the average infected person.

Caveats

  • The claim wrongly generalizes from Andes virus, the only hantavirus with documented person-to-person transmission, to all hantaviruses.
  • It confuses a maximum observed number of secondary cases in rare clusters with an average reproduction level.
  • It omits the key context that human-to-human spread, when it occurs, usually requires close and prolonged contact and has low secondary attack rates.

The Receipts

  1. About Hantavirus

    CDC

  2. Andes Virus Outbreak on a Cruise Ship: Current Situation | Hantavirus

    CDC

  3. Hantavirus Pulmonary Syndrome in Argentina

    CDC Emerging Infectious Diseases

  4. Person-to-Person Transmission of Andes Hantavirus, Chile

    PubMed Central

  5. Reported Cases of Hantavirus Disease

    Centers for Disease Control and Prevention (CDC)

  6. About Andes Virus | Hantavirus

    Centers for Disease Control and Prevention (CDC)

  7. Hantavirus

    World Health Organization

  8. Evidence for Human-to-Human Transmission of Hantavirus

    PubMed Central (NIH)

  9. Evidence for Human-to-Human Transmission of Hantavirus

    PubMed (NIH)

  10. Person-to-Person Transmission of Andes Virus in Hantavirus Pulmonary Syndrome

    PubMed Central (NIH)

+ 12 more sources — see the full list on Lenz

Filed Under

Hantavirus

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