This will be squelched in the US for the same reason HCQ/Zithromax/Zinc and Ivermectin/Doxycycline/Zinc (and other protocols) have been suppressed.
A cheap, effective treatment for even half the cases out there significantly reduces the FEAR factor, provides an 'out' for people who don't want the jabs, and cuts back on the reasons for the totalitarian feeding frenzy on people's Rights.