I re-read it looking for exactly that answer, but I don’t see it. It’s such an obvious question. I’m always surprised when “professionals” don’t provide answers to obvious questions.
They report the prophylaxis effect in terms of overall reduction over a one month period. But there is a half-life in the body and effectiveness has to decline. Do you need to dose weekly? Bi-weekly? Monthly?
Okay....from the articles I can find, on this, it looks like this was only a one month study. It involved 300+ HCWs.
So, I guess this is a once a month, 2 dose (w/each dose being 72 hrs apart) regimen.
I thought this was interesting....
... “Earlier, at least 20 to 25 HCWs were getting infected with the virus daily. After the workers started taking ivermectin, the number of infection has come down to one or two per day.”
https://www.pharmaceutical-technology.com/news/aiims-study-covid-19/