I’ve looked up what Ivermectin treats a number of times, don’t have a list, or time to look it up right now, but here’s search results that might help. Of course, considering the medical-pharmaceutical industrial complex, they might lie about that too.
https://search.brave.com/search?q=ivermectin+leptospirosis&source=desktop
what Ivermectin treats:
Ivermectin Plus Metronidazole Most Effective for Reducing Demodex (mites)