Ivermectin is available at any of the local farmacias. Which are everywhere down there. Sorry to hear about your wife. I went to Mexico a month ago. I will not go back until covid is done. They pestered us constantly about masks. Go into gas stations or even Walmart and they would say where is your mask. I got sick of it. The hotel we stayed at charged us like 40 bucks for covid tests for air travel. The airport never asked to see the tests. I got sick from something after I got back.