RNA interference in animals is mediated by small double-stranded RNA molecules, siRNA. siRNAs can be used as tools to study single gene function both in vivo and in vitro and are an attractive new class of therapeutics. The siRNA delivery systems are categorized as viral delivery systems and non-viral delivery systems such as peptide, polymers and lipids.
Numerous studies provide evidence that siRNA has an antiviral effect against various viruses, including SARS-CoV
https://sars-cov-2.creative-biolabs.com/sirna-for-the-treatment-of-sars-cov2.htm