My travel insurance includes a page that spells out exactly what's covered as it relates to Covid. If that doesn't work, well, I guess I'm not getting into Argentina.

I have an annual package with Blue Cross -- I think it works out to $60-something a year for unlimited trips of up to 17 days. I don't rely on credit card coverage because at least in the before times (and hopefuly again soon) I do a fair bit of OPM flying, so I want to be sure I'm covered no matter whose card by trips are on.