I think we are ok. From what I could find, lemmings are not a carrier of COVID-19, thank goodness. ("Lemmings with COVID" are not to be mistaken for "COVID lemmings". I think that was some anti-vax slang.)

The absolute worst they can host is the bubonic plague, so we are fine. There is nothing quite like a morning bleed out your eyeballs to perk you up!