Small study analyzing the impact of PVP-I mouthwash on the salivary viral load of SARS‐CoV‐2 in 4 patients with COVID‐19. In 2 of the 4 patients (those with a higher initial viral load), PVP‐I resulted in a significant drop in viral load, which remained after 3 hours.
Martínez Lamas et al., 7/2/2020, peer-reviewed, 9 authors.