ScienceContemporaryglobalmedium confidence

Norovirus resists freezing and heating to 60°C and is not eradicated by alcohol-based hand sanitizers.

Notes on verification

Confirmed by CDC and FDA public health resources; consistent with known virology of non-enveloped viruses resisting alcohol-based disinfectants and thermal/freezing stress. [tier=bronze indep_score=0.539 clusters=2 claim_tier=notable]

Sources