Interferon lambda is a new antiviral drug that has shown promise in reducing hospitalizations and deaths from COVID-19 by up to 80%. The drug is given as a single shot by a doctor and has minimal side effects compared to other COVID-19 treatments. The drug has high antiviral activity against different variants of the virus and has the potential to be a broad-spectrum antiviral treatment for other viruses like influenza. The drug could also slow the emergence of viral resistance to other antiviral treatments. The drug is not yet approved for use in the US but is being considered for approval outside the US.
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