Fact Check: Is hantavirus listed as a side effect of Pfizer’s COVID-19 vaccine?

Media Bias Fact Check (MBFC) publishes daily vetted fact checks from verified IFCN-approved sources. Each claim is independently reviewed for accuracy and context.

Claimant: Social Media

Claim: Hantavirus is listed as a side effect of Pfizer’s COVID-19 vaccine.

Rating: BLATANT LIE

Explanation: Hantavirus appeared in Pfizer documents as part of a list of adverse events of special interest, which are health conditions researchers monitor during vaccine trials, not confirmed vaccine side effects.

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Date: 05/10/2026

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Last Updated on May 10, 2026 by Media Bias Fact Check

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