With this drug, they can go straight to human trials for Covid. The article says that even relatively high dose of this med is safe in people from studies looking at dengue viral infection (which isn't particularly effective vs dengue)
"Importantly, recent reviews and meta-analysis indicate that high dose ivermectin has comparable safety as the standard low-dose treatment, although there is not enough evidence to make conclusions about the safety profile in pregnancy28,29. The critical next step in further evaluation for possible benefit in COVID-19 patients will be to examine a multiple addition dosing regimen that mimics the current approved usage of ivermectin in humans. "
There's also this important consideration:
"Ultimately, development of an effective anti-viral for SARS-CoV-2, if given to patients early in infection, could help to limit the viral load, prevent severe disease progression and limit person-person transmission."
With Covid, a lot appears to hinge on early detection and intervention. If you wait until pneumonia has set in, the damage is done. That's one area where testing limitations in availability and rapid results are still biting us in he butt.