Variant enterovirus A71 found in immune-suppressed patient binds to heparan sulfate and exhibits neurotropism in B-cell-depleted mice

A L97R substitution in the VP1 capsid protein of enterovirus A71, conferring heparan sulfate binding ability, was detected in an immunocompromised patient. Weng et al. demonstrate that variants with this mutation, despite increased susceptibility to host neutralizing antibodies, are more virulent in orally infected immunosuppressed mice.

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