Yes โ the former Soviet Union has used virus-based phage therapy for nearly a century.
At the Eliava Institute in Tbilisi, Georgia, founded in the 1920s, doctors have treated bacterial infections with bacteriophages โ viruses that hunt and kill specific bacteria. While the West leaned almost entirely on antibiotics, phage remedies were sold in ordinary pharmacies across the USSR, and the approach is now drawing fresh interest as resistance spreads.