Not yet peer reviewed so is pre-publication of the data. Dr John Campbell goes over the study and explains his interpretation of it.

Note that they only gave two doses 3 days apart and that was all there was for a full month during the study. Current recommendations for prevention is a dose weekly or bi-weekly.  This study was specifically for prevention, not treatment of existing disease.

https://www.youtube.com/watch?v=XYv30g7TKVM&t=638s