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At least two human cases of “dual mutant” strains of H1N1 influenza have been detected in Connecticut and Michigan, according to a report from the Centers for Disease Control and Prevention (CDC). Genetic changes are concerning because they could reduce the effectiveness of current antiviral treatments. Mutations of H1N1 appear to have 13-fold greater resistance to the flu treatment oseltamivir—the most commonly prescribed treatment for flu. An analysis of the new H1N1 flu viruses with the mutations I223V and S247N shows that they still appear to be rare, however, according to CDC.
Continue to treat as usual: “There are no immediate implications to change decisions for clinical care,” a CDC spokesperson told CBS News.
Rare Flu Strain Sparks Concerns For Treatment Resistance