Ivermectin is currently used for about 28% of the world’s population. Countries where COVID-19 mortality is close to zero may not have incentive to adopt treatments. When excluding these countries, ivermectin adoption is about 36%. We excluded countries where the cumulative mortality over the preceding month was less than 1 in 1 million, according to the data at https://ourworldindata.org/). For the estimated population coverage, isolated use, some regions, mixed usage, and many regions use a factor of 0.05, 0.25, 0.5, and 0.75 respectively. Please send us corrections/updates.