Disease, while sitting right at the door, claims to be very far away and sings a morning tune, a situation lamented with "Alas!".

This couplet paints a vivid picture of disease. It personifies illness, showing it as a deceptive entity. The disease declares, "I live very far away!" But immediately after, it's described as sitting right at your doorstep, cheerfully singing a morning song. This creates a powerful irony. The disease pretends to be distant and harmless, but it's actually here, announcing its arrival with a deceptive cheerfulness, like a morning visitor. The final "Oh dear" adds a touch of resignation or sadness, acknowledging the inevitable presence of trouble. It's a reminder that sometimes dangers lurk closer than they appear, often camouflaged by false assurances.