Jul 11, 2025
Stratus isn’t an official WHO label but a nickname for KP.3, a subvariant within the JN.1 lineage.
Source: canva
Stratus has quickly become the most reported variant in the UK, outpacing other strains in immunity to vaccine.
Source: canva
Preliminary data suggests Stratus has changes in its spike protein that help it evade antibodies, making it potentially more vaccine-resistant than earlier Omicron variants.
Source: canva
Stratus is part of the FLiRT mutation family, known for immune evasion.
Source: canva
Despite its immune-evasive nature, there’s no evidence yet that Stratus causes more severe illness.
Source: canva
High transmissibility plus immune escape might lead to more breakthrough infections.
Source: canva
Continue basic precautions—mask in crowded spaces, stay updated on boosters, and test if symptomatic.
Source: canva
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